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Finding the Fourth Proportional to 520,179.65, 717,560.49 and 423,487.52

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Solution

The fourth proportional to 520,179.65, 717,560.49 and 423,487.52 is: 584,178.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,179.65 : 717,560.49 = 423,487.52 : x
  2. Step 2: Convert to fraction form
    520,179.65/717,560.49 = 423,487.52/x
  3. Step 3: Cross multiply
    520,179.65x = 717,560.49 × 423,487.52
  4. Step 4: Simplify right side
    520,179.65x = 303,877,906,654.85
  5. Step 5: Solve for x
    x = 303,877,906,654.85/520,179.65
  6. Step 6: Final answer
    x = 584,178.77

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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.