Home / 683,420.20-1,025,130.30-329,126.20

Finding the Fourth Proportional to 683,420.20, 1,025,130.30 and 329,126.20

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Solution

The fourth proportional to 683,420.20, 1,025,130.30 and 329,126.20 is: 493,689.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,420.20 : 1,025,130.30 = 329,126.20 : x
  2. Step 2: Convert to fraction form
    683,420.20/1,025,130.30 = 329,126.20/x
  3. Step 3: Cross multiply
    683,420.20x = 1,025,130.30 × 329,126.20
  4. Step 4: Simplify right side
    683,420.20x = 337,397,240,143.86
  5. Step 5: Solve for x
    x = 337,397,240,143.86/683,420.20
  6. Step 6: Final answer
    x = 493,689.30

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Double scale
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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.