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Finding the Fourth Proportional to 724,295.52, 999,480.87 and 402,005.70

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Solution

The fourth proportional to 724,295.52, 999,480.87 and 402,005.70 is: 554,741.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,295.52 : 999,480.87 = 402,005.70 : x
  2. Step 2: Convert to fraction form
    724,295.52/999,480.87 = 402,005.70/x
  3. Step 3: Cross multiply
    724,295.52x = 999,480.87 × 402,005.70
  4. Step 4: Simplify right side
    724,295.52x = 401,797,006,780.96
  5. Step 5: Solve for x
    x = 401,797,006,780.96/724,295.52
  6. Step 6: Final answer
    x = 554,741.81

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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.