Home / 865,612.20-1,298,418.30-492,364.20

Finding the Fourth Proportional to 865,612.20, 1,298,418.30 and 492,364.20

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Solution

The fourth proportional to 865,612.20, 1,298,418.30 and 492,364.20 is: 738,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,612.20 : 1,298,418.30 = 492,364.20 : x
  2. Step 2: Convert to fraction form
    865,612.20/1,298,418.30 = 492,364.20/x
  3. Step 3: Cross multiply
    865,612.20x = 1,298,418.30 × 492,364.20
  4. Step 4: Simplify right side
    865,612.20x = 639,294,687,544.86
  5. Step 5: Solve for x
    x = 639,294,687,544.86/865,612.20
  6. Step 6: Final answer
    x = 738,546.30

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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.