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Finding the Fourth Proportional to 657,999.90, 986,999.85 and 303,705.90

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Solution

The fourth proportional to 657,999.90, 986,999.85 and 303,705.90 is: 455,558.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,999.90 : 986,999.85 = 303,705.90 : x
  2. Step 2: Convert to fraction form
    657,999.90/986,999.85 = 303,705.90/x
  3. Step 3: Cross multiply
    657,999.90x = 986,999.85 × 303,705.90
  4. Step 4: Simplify right side
    657,999.90x = 299,757,677,744.12
  5. Step 5: Solve for x
    x = 299,757,677,744.12/657,999.90
  6. Step 6: Final answer
    x = 455,558.85

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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.