Home / 672,079.90-1,008,119.85-432,931.45

Finding the Fourth Proportional to 672,079.90, 1,008,119.85 and 432,931.45

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Solution

The fourth proportional to 672,079.90, 1,008,119.85 and 432,931.45 is: 649,397.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,079.90 : 1,008,119.85 = 432,931.45 : x
  2. Step 2: Convert to fraction form
    672,079.90/1,008,119.85 = 432,931.45/x
  3. Step 3: Cross multiply
    672,079.90x = 1,008,119.85 × 432,931.45
  4. Step 4: Simplify right side
    672,079.90x = 436,446,788,434.28
  5. Step 5: Solve for x
    x = 436,446,788,434.28/672,079.90
  6. Step 6: Final answer
    x = 649,397.18

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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.