Home / 693,609.60-1,039,723.20-318,979.20

Finding the Fourth Proportional to 693,609.60, 1,039,723.20 and 318,979.20

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Solution

The fourth proportional to 693,609.60, 1,039,723.20 and 318,979.20 is: 478,150.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,609.60 : 1,039,723.20 = 318,979.20 : x
  2. Step 2: Convert to fraction form
    693,609.60/1,039,723.20 = 318,979.20/x
  3. Step 3: Cross multiply
    693,609.60x = 1,039,723.20 × 318,979.20
  4. Step 4: Simplify right side
    693,609.60x = 331,650,074,557.44
  5. Step 5: Solve for x
    x = 331,650,074,557.44/693,609.60
  6. Step 6: Final answer
    x = 478,150.93

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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.