Home / 814,387.77-1,123,728.39-465,523.20

Finding the Fourth Proportional to 814,387.77, 1,123,728.39 and 465,523.20

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Solution

The fourth proportional to 814,387.77, 1,123,728.39 and 465,523.20 is: 642,349.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,387.77 : 1,123,728.39 = 465,523.20 : x
  2. Step 2: Convert to fraction form
    814,387.77/1,123,728.39 = 465,523.20/x
  3. Step 3: Cross multiply
    814,387.77x = 1,123,728.39 × 465,523.20
  4. Step 4: Simplify right side
    814,387.77x = 523,121,636,043.65
  5. Step 5: Solve for x
    x = 523,121,636,043.65/814,387.77
  6. Step 6: Final answer
    x = 642,349.57

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.