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Finding the Fourth Proportional to 520,389.42, 718,257.51 and 338,785.26

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Solution

The fourth proportional to 520,389.42, 718,257.51 and 338,785.26 is: 467,601.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,389.42 : 718,257.51 = 338,785.26 : x
  2. Step 2: Convert to fraction form
    520,389.42/718,257.51 = 338,785.26/x
  3. Step 3: Cross multiply
    520,389.42x = 718,257.51 × 338,785.26
  4. Step 4: Simplify right side
    520,389.42x = 243,335,057,272.30
  5. Step 5: Solve for x
    x = 243,335,057,272.30/520,389.42
  6. Step 6: Final answer
    x = 467,601.85

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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.