Home / 724,428.56-999,692.52-402,130.16

Finding the Fourth Proportional to 724,428.56, 999,692.52 and 402,130.16

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Solution

The fourth proportional to 724,428.56, 999,692.52 and 402,130.16 is: 554,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,428.56 : 999,692.52 = 402,130.16 : x
  2. Step 2: Convert to fraction form
    724,428.56/999,692.52 = 402,130.16/x
  3. Step 3: Cross multiply
    724,428.56x = 999,692.52 × 402,130.16
  4. Step 4: Simplify right side
    724,428.56x = 402,006,513,018.40
  5. Step 5: Solve for x
    x = 402,006,513,018.40/724,428.56
  6. Step 6: Final answer
    x = 554,929.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.