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Finding the Fourth Proportional to 521,451.96, 719,613.90 and 340,279.80

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Solution

The fourth proportional to 521,451.96, 719,613.90 and 340,279.80 is: 469,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,451.96 : 719,613.90 = 340,279.80 : x
  2. Step 2: Convert to fraction form
    521,451.96/719,613.90 = 340,279.80/x
  3. Step 3: Cross multiply
    521,451.96x = 719,613.90 × 340,279.80
  4. Step 4: Simplify right side
    521,451.96x = 244,870,073,969.22
  5. Step 5: Solve for x
    x = 244,870,073,969.22/521,451.96
  6. Step 6: Final answer
    x = 469,592.78

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1.5x scale

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.