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Finding the Fourth Proportional to 520,463.38, 780,695.34 and 146,486.38

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Solution

The fourth proportional to 520,463.38, 780,695.34 and 146,486.38 is: 219,729.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,463.38 : 780,695.34 = 146,486.38 : x
  2. Step 2: Convert to fraction form
    520,463.38/780,695.34 = 146,486.38/x
  3. Step 3: Cross multiply
    520,463.38x = 780,695.34 × 146,486.38
  4. Step 4: Simplify right side
    520,463.38x = 114,361,234,239.47
  5. Step 5: Solve for x
    x = 114,361,234,239.47/520,463.38
  6. Step 6: Final answer
    x = 219,729.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.