Home / 693,711.60-1,039,876.20-319,081.20

Finding the Fourth Proportional to 693,711.60, 1,039,876.20 and 319,081.20

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Solution

The fourth proportional to 693,711.60, 1,039,876.20 and 319,081.20 is: 478,303.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,711.60 : 1,039,876.20 = 319,081.20 : x
  2. Step 2: Convert to fraction form
    693,711.60/1,039,876.20 = 319,081.20/x
  3. Step 3: Cross multiply
    693,711.60x = 1,039,876.20 × 319,081.20
  4. Step 4: Simplify right side
    693,711.60x = 331,804,945,747.44
  5. Step 5: Solve for x
    x = 331,804,945,747.44/693,711.60
  6. Step 6: Final answer
    x = 478,303.87

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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.