Home / 693,747.60-1,039,930.20-319,117.20

Finding the Fourth Proportional to 693,747.60, 1,039,930.20 and 319,117.20

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Solution

The fourth proportional to 693,747.60, 1,039,930.20 and 319,117.20 is: 478,357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,747.60 : 1,039,930.20 = 319,117.20 : x
  2. Step 2: Convert to fraction form
    693,747.60/1,039,930.20 = 319,117.20/x
  3. Step 3: Cross multiply
    693,747.60x = 1,039,930.20 × 319,117.20
  4. Step 4: Simplify right side
    693,747.60x = 331,859,613,619.44
  5. Step 5: Solve for x
    x = 331,859,613,619.44/693,747.60
  6. Step 6: Final answer
    x = 478,357.85

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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.