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Finding the Fourth Proportional to 658,505.76, 908,756.64 and 372,037.92

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Solution

The fourth proportional to 658,505.76, 908,756.64 and 372,037.92 is: 513,422.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,505.76 : 908,756.64 = 372,037.92 : x
  2. Step 2: Convert to fraction form
    658,505.76/908,756.64 = 372,037.92/x
  3. Step 3: Cross multiply
    658,505.76x = 908,756.64 × 372,037.92
  4. Step 4: Simplify right side
    658,505.76x = 338,091,930,131.79
  5. Step 5: Solve for x
    x = 338,091,930,131.79/658,505.76
  6. Step 6: Final answer
    x = 513,422.89

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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.