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Finding the Fourth Proportional to 531,930.60, 797,895.90 and 307,981.80

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Solution

The fourth proportional to 531,930.60, 797,895.90 and 307,981.80 is: 461,972.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,930.60 : 797,895.90 = 307,981.80 : x
  2. Step 2: Convert to fraction form
    531,930.60/797,895.90 = 307,981.80/x
  3. Step 3: Cross multiply
    531,930.60x = 797,895.90 × 307,981.80
  4. Step 4: Simplify right side
    531,930.60x = 245,737,415,494.62
  5. Step 5: Solve for x
    x = 245,737,415,494.62/531,930.60
  6. Step 6: Final answer
    x = 461,972.70

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1.5x scale

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.