Home / 715,445.40-1,073,168.10-432,010.20

Finding the Fourth Proportional to 715,445.40, 1,073,168.10 and 432,010.20

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Solution

The fourth proportional to 715,445.40, 1,073,168.10 and 432,010.20 is: 648,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,445.40 : 1,073,168.10 = 432,010.20 : x
  2. Step 2: Convert to fraction form
    715,445.40/1,073,168.10 = 432,010.20/x
  3. Step 3: Cross multiply
    715,445.40x = 1,073,168.10 × 432,010.20
  4. Step 4: Simplify right side
    715,445.40x = 463,619,565,514.62
  5. Step 5: Solve for x
    x = 463,619,565,514.62/715,445.40
  6. Step 6: Final answer
    x = 648,015.30

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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.