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Finding the Fourth Proportional to 521,337.32, 718,832.54 and 417,888.80

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Solution

The fourth proportional to 521,337.32, 718,832.54 and 417,888.80 is: 576,195.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,337.32 : 718,832.54 = 417,888.80 : x
  2. Step 2: Convert to fraction form
    521,337.32/718,832.54 = 417,888.80/x
  3. Step 3: Cross multiply
    521,337.32x = 718,832.54 × 417,888.80
  4. Step 4: Simplify right side
    521,337.32x = 300,392,071,731.17
  5. Step 5: Solve for x
    x = 300,392,071,731.17/521,337.32
  6. Step 6: Final answer
    x = 576,195.22

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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.