Home / 1,328,603,998.80-1,992,905,998.20-454,914,994.80

Finding the Fourth Proportional to 1,328,603,998.80, 1,992,905,998.20 and 454,914,994.80

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Solution

The fourth proportional to 1,328,603,998.80, 1,992,905,998.20 and 454,914,994.80 is: 682,372,492.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,603,998.80 : 1,992,905,998.20 = 454,914,994.80 : x
  2. Step 2: Convert to fraction form
    1,328,603,998.80/1,992,905,998.20 = 454,914,994.80/x
  3. Step 3: Cross multiply
    1,328,603,998.80x = 1,992,905,998.20 × 454,914,994.80
  4. Step 4: Simplify right side
    1,328,603,998.80x = 906,602,821,808,041,856
  5. Step 5: Solve for x
    x = 906,602,821,808,041,856/1,328,603,998.80
  6. Step 6: Final answer
    x = 682,372,492.20

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Half scale
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Double scale
Find fourth proportional to 1,328,603,999.80, 1,992,905,999.70 and 454,914,995.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.