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Finding the Fourth Proportional to 324,614.30, 486,921.45 and 319,948.70

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Solution

The fourth proportional to 324,614.30, 486,921.45 and 319,948.70 is: 479,923.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,614.30 : 486,921.45 = 319,948.70 : x
  2. Step 2: Convert to fraction form
    324,614.30/486,921.45 = 319,948.70/x
  3. Step 3: Cross multiply
    324,614.30x = 486,921.45 × 319,948.70
  4. Step 4: Simplify right side
    324,614.30x = 155,789,884,929.62
  5. Step 5: Solve for x
    x = 155,789,884,929.62/324,614.30
  6. Step 6: Final answer
    x = 479,923.05

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Similar ratio
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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.