Home / 672,736.32-928,398.24-386,307.36

Finding the Fourth Proportional to 672,736.32, 928,398.24 and 386,307.36

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Solution

The fourth proportional to 672,736.32, 928,398.24 and 386,307.36 is: 533,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,736.32 : 928,398.24 = 386,307.36 : x
  2. Step 2: Convert to fraction form
    672,736.32/928,398.24 = 386,307.36/x
  3. Step 3: Cross multiply
    672,736.32x = 928,398.24 × 386,307.36
  4. Step 4: Simplify right side
    672,736.32x = 358,647,073,123.05
  5. Step 5: Solve for x
    x = 358,647,073,123.05/672,736.32
  6. Step 6: Final answer
    x = 533,116.86

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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.