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Finding the Fourth Proportional to 519,660.18, 717,819.56 and 418,068.28

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Solution

The fourth proportional to 519,660.18, 717,819.56 and 418,068.28 is: 577,488.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,660.18 : 717,819.56 = 418,068.28 : x
  2. Step 2: Convert to fraction form
    519,660.18/717,819.56 = 418,068.28/x
  3. Step 3: Cross multiply
    519,660.18x = 717,819.56 × 418,068.28
  4. Step 4: Simplify right side
    519,660.18x = 300,097,588,799.56
  5. Step 5: Solve for x
    x = 300,097,588,799.56/519,660.18
  6. Step 6: Final answer
    x = 577,488.14

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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.