Home / 688,972.10-1,033,490.55-215,672.90

Finding the Fourth Proportional to 688,972.10, 1,033,490.55 and 215,672.90

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Solution

The fourth proportional to 688,972.10, 1,033,490.55 and 215,672.90 is: 323,519.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,972.10 : 1,033,490.55 = 215,672.90 : x
  2. Step 2: Convert to fraction form
    688,972.10/1,033,490.55 = 215,672.90/x
  3. Step 3: Cross multiply
    688,972.10x = 1,033,490.55 × 215,672.90
  4. Step 4: Simplify right side
    688,972.10x = 222,895,904,041.10
  5. Step 5: Solve for x
    x = 222,895,904,041.10/688,972.10
  6. Step 6: Final answer
    x = 323,519.49

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Double scale
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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.