Home / 1,206,108,415.80-1,809,162,623.70-516,085,421.40

Finding the Fourth Proportional to 1,206,108,415.80, 1,809,162,623.70 and 516,085,421.40

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Solution

The fourth proportional to 1,206,108,415.80, 1,809,162,623.70 and 516,085,421.40 is: 774,128,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,108,415.80 : 1,809,162,623.70 = 516,085,421.40 : x
  2. Step 2: Convert to fraction form
    1,206,108,415.80/1,809,162,623.70 = 516,085,421.40/x
  3. Step 3: Cross multiply
    1,206,108,415.80x = 1,809,162,623.70 × 516,085,421.40
  4. Step 4: Simplify right side
    1,206,108,415.80x = 933,682,455,033,344,128
  5. Step 5: Solve for x
    x = 933,682,455,033,344,128/1,206,108,415.80
  6. Step 6: Final answer
    x = 774,128,132.10

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Half scale
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Double scale
Find fourth proportional to 1,206,108,416.80, 1,809,162,625.20 and 516,085,422.40
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.