Home / 672,433.40-928,008.78-386,046.20

Finding the Fourth Proportional to 672,433.40, 928,008.78 and 386,046.20

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Solution

The fourth proportional to 672,433.40, 928,008.78 and 386,046.20 is: 532,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,433.40 : 928,008.78 = 386,046.20 : x
  2. Step 2: Convert to fraction form
    672,433.40/928,008.78 = 386,046.20/x
  3. Step 3: Cross multiply
    672,433.40x = 928,008.78 × 386,046.20
  4. Step 4: Simplify right side
    672,433.40x = 358,254,263,085.64
  5. Step 5: Solve for x
    x = 358,254,263,085.64/672,433.40
  6. Step 6: Final answer
    x = 532,772.86

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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.