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Finding the Fourth Proportional to 674,306.87, 930,561.74 and 402,532.50

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Solution

The fourth proportional to 674,306.87, 930,561.74 and 402,532.50 is: 555,505.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,306.87 : 930,561.74 = 402,532.50 : x
  2. Step 2: Convert to fraction form
    674,306.87/930,561.74 = 402,532.50/x
  3. Step 3: Cross multiply
    674,306.87x = 930,561.74 × 402,532.50
  4. Step 4: Simplify right side
    674,306.87x = 374,581,343,606.55
  5. Step 5: Solve for x
    x = 374,581,343,606.55/674,306.87
  6. Step 6: Final answer
    x = 555,505.75

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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.