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Finding the Fourth Proportional to 520,630.20, 718,257.60 and 339,276.06

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Solution

The fourth proportional to 520,630.20, 718,257.60 and 339,276.06 is: 468,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,630.20 : 718,257.60 = 339,276.06 : x
  2. Step 2: Convert to fraction form
    520,630.20/718,257.60 = 339,276.06/x
  3. Step 3: Cross multiply
    520,630.20x = 718,257.60 × 339,276.06
  4. Step 4: Simplify right side
    520,630.20x = 243,687,608,593.06
  5. Step 5: Solve for x
    x = 243,687,608,593.06/520,630.20
  6. Step 6: Final answer
    x = 468,062.76

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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.