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Finding the Fourth Proportional to 479,327.40, 661,711.50 and 298,097.70

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Solution

The fourth proportional to 479,327.40, 661,711.50 and 298,097.70 is: 411,523.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,327.40 : 661,711.50 = 298,097.70 : x
  2. Step 2: Convert to fraction form
    479,327.40/661,711.50 = 298,097.70/x
  3. Step 3: Cross multiply
    479,327.40x = 661,711.50 × 298,097.70
  4. Step 4: Simplify right side
    479,327.40x = 197,254,676,213.55
  5. Step 5: Solve for x
    x = 197,254,676,213.55/479,327.40
  6. Step 6: Final answer
    x = 411,523.89

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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.