Home / 865,415.20-1,298,122.80-492,167.20

Finding the Fourth Proportional to 865,415.20, 1,298,122.80 and 492,167.20

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Solution

The fourth proportional to 865,415.20, 1,298,122.80 and 492,167.20 is: 738,250.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,415.20 : 1,298,122.80 = 492,167.20 : x
  2. Step 2: Convert to fraction form
    865,415.20/1,298,122.80 = 492,167.20/x
  3. Step 3: Cross multiply
    865,415.20x = 1,298,122.80 × 492,167.20
  4. Step 4: Simplify right side
    865,415.20x = 638,893,463,732.16
  5. Step 5: Solve for x
    x = 638,893,463,732.16/865,415.20
  6. Step 6: Final answer
    x = 738,250.80

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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.