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Finding the Fourth Proportional to 491,931.87, 737,897.94 and 379,775.81

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Solution

The fourth proportional to 491,931.87, 737,897.94 and 379,775.81 is: 569,663.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,931.87 : 737,897.94 = 379,775.81 : x
  2. Step 2: Convert to fraction form
    491,931.87/737,897.94 = 379,775.81/x
  3. Step 3: Cross multiply
    491,931.87x = 737,897.94 × 379,775.81
  4. Step 4: Simplify right side
    491,931.87x = 280,235,784,171.34
  5. Step 5: Solve for x
    x = 280,235,784,171.34/491,931.87
  6. Step 6: Final answer
    x = 569,663.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.