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Finding the Fourth Proportional to 520,448.73, 717,822.90 and 447,974.88

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Solution

The fourth proportional to 520,448.73, 717,822.90 and 447,974.88 is: 617,864.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,448.73 : 717,822.90 = 447,974.88 : x
  2. Step 2: Convert to fraction form
    520,448.73/717,822.90 = 447,974.88/x
  3. Step 3: Cross multiply
    520,448.73x = 717,822.90 × 447,974.88
  4. Step 4: Simplify right side
    520,448.73x = 321,566,627,488.75
  5. Step 5: Solve for x
    x = 321,566,627,488.75/520,448.73
  6. Step 6: Final answer
    x = 617,864.18

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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.