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Finding the Fourth Proportional to 724,375.76, 999,588.52 and 402,060.50

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Solution

The fourth proportional to 724,375.76, 999,588.52 and 402,060.50 is: 554,815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,375.76 : 999,588.52 = 402,060.50 : x
  2. Step 2: Convert to fraction form
    724,375.76/999,588.52 = 402,060.50/x
  3. Step 3: Cross multiply
    724,375.76x = 999,588.52 × 402,060.50
  4. Step 4: Simplify right side
    724,375.76x = 401,895,060,145.46
  5. Step 5: Solve for x
    x = 401,895,060,145.46/724,375.76
  6. Step 6: Final answer
    x = 554,815.72

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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.