Home / 693,403.40-1,040,105.10-587,115.20

Finding the Fourth Proportional to 693,403.40, 1,040,105.10 and 587,115.20

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Solution

The fourth proportional to 693,403.40, 1,040,105.10 and 587,115.20 is: 880,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,403.40 : 1,040,105.10 = 587,115.20 : x
  2. Step 2: Convert to fraction form
    693,403.40/1,040,105.10 = 587,115.20/x
  3. Step 3: Cross multiply
    693,403.40x = 1,040,105.10 × 587,115.20
  4. Step 4: Simplify right side
    693,403.40x = 610,661,513,807.52
  5. Step 5: Solve for x
    x = 610,661,513,807.52/693,403.40
  6. Step 6: Final answer
    x = 880,672.80

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