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Finding the Fourth Proportional to 724,294.92, 999,573.72 and 402,005.04

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Solution

The fourth proportional to 724,294.92, 999,573.72 and 402,005.04 is: 554,792.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,294.92 : 999,573.72 = 402,005.04 : x
  2. Step 2: Convert to fraction form
    724,294.92/999,573.72 = 402,005.04/x
  3. Step 3: Cross multiply
    724,294.92x = 999,573.72 × 402,005.04
  4. Step 4: Simplify right side
    724,294.92x = 401,833,673,291.55
  5. Step 5: Solve for x
    x = 401,833,673,291.55/724,294.92
  6. Step 6: Final answer
    x = 554,792.89

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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.