Home / 820,125.66-1,131,774.12-457,549.59

Finding the Fourth Proportional to 820,125.66, 1,131,774.12 and 457,549.59

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Solution

The fourth proportional to 820,125.66, 1,131,774.12 and 457,549.59 is: 631,418.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,125.66 : 1,131,774.12 = 457,549.59 : x
  2. Step 2: Convert to fraction form
    820,125.66/1,131,774.12 = 457,549.59/x
  3. Step 3: Cross multiply
    820,125.66x = 1,131,774.12 × 457,549.59
  4. Step 4: Simplify right side
    820,125.66x = 517,842,789,680.67
  5. Step 5: Solve for x
    x = 517,842,789,680.67/820,125.66
  6. Step 6: Final answer
    x = 631,418.83

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.