Home / 763,928.60-1,145,136.90-337,695.80

Finding the Fourth Proportional to 763,928.60, 1,145,136.90 and 337,695.80

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Solution

The fourth proportional to 763,928.60, 1,145,136.90 and 337,695.80 is: 506,209.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,928.60 : 1,145,136.90 = 337,695.80 : x
  2. Step 2: Convert to fraction form
    763,928.60/1,145,136.90 = 337,695.80/x
  3. Step 3: Cross multiply
    763,928.60x = 1,145,136.90 × 337,695.80
  4. Step 4: Simplify right side
    763,928.60x = 386,707,921,555.02
  5. Step 5: Solve for x
    x = 386,707,921,555.02/763,928.60
  6. Step 6: Final answer
    x = 506,209.51

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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.