Home / 672,426.40-927,999.12-386,039.20

Finding the Fourth Proportional to 672,426.40, 927,999.12 and 386,039.20

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Solution

The fourth proportional to 672,426.40, 927,999.12 and 386,039.20 is: 532,763.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,426.40 : 927,999.12 = 386,039.20 : x
  2. Step 2: Convert to fraction form
    672,426.40/927,999.12 = 386,039.20/x
  3. Step 3: Cross multiply
    672,426.40x = 927,999.12 × 386,039.20
  4. Step 4: Simplify right side
    672,426.40x = 358,244,037,885.50
  5. Step 5: Solve for x
    x = 358,244,037,885.50/672,426.40
  6. Step 6: Final answer
    x = 532,763.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.