Home / 920,139.12-1,269,850.08-557,594.76

Finding the Fourth Proportional to 920,139.12, 1,269,850.08 and 557,594.76

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Solution

The fourth proportional to 920,139.12, 1,269,850.08 and 557,594.76 is: 769,515.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,139.12 : 1,269,850.08 = 557,594.76 : x
  2. Step 2: Convert to fraction form
    920,139.12/1,269,850.08 = 557,594.76/x
  3. Step 3: Cross multiply
    920,139.12x = 1,269,850.08 × 557,594.76
  4. Step 4: Simplify right side
    920,139.12x = 708,061,750,593.58
  5. Step 5: Solve for x
    x = 708,061,750,593.58/920,139.12
  6. Step 6: Final answer
    x = 769,515.97

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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.