Home / 688,630.60-1,032,945.90-215,363.80

Finding the Fourth Proportional to 688,630.60, 1,032,945.90 and 215,363.80

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Solution

The fourth proportional to 688,630.60, 1,032,945.90 and 215,363.80 is: 323,045.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,630.60 : 1,032,945.90 = 215,363.80 : x
  2. Step 2: Convert to fraction form
    688,630.60/1,032,945.90 = 215,363.80/x
  3. Step 3: Cross multiply
    688,630.60x = 1,032,945.90 × 215,363.80
  4. Step 4: Simplify right side
    688,630.60x = 222,459,154,218.42
  5. Step 5: Solve for x
    x = 222,459,154,218.42/688,630.60
  6. Step 6: Final answer
    x = 323,045.70

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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.