Home / 724,999.90-1,087,499.85-658,515.10

Finding the Fourth Proportional to 724,999.90, 1,087,499.85 and 658,515.10

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Solution

The fourth proportional to 724,999.90, 1,087,499.85 and 658,515.10 is: 987,772.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,999.90 : 1,087,499.85 = 658,515.10 : x
  2. Step 2: Convert to fraction form
    724,999.90/1,087,499.85 = 658,515.10/x
  3. Step 3: Cross multiply
    724,999.90x = 1,087,499.85 × 658,515.10
  4. Step 4: Simplify right side
    724,999.90x = 716,135,072,472.74
  5. Step 5: Solve for x
    x = 716,135,072,472.74/724,999.90
  6. Step 6: Final answer
    x = 987,772.65

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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.