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Finding the Fourth Proportional to 672,750.24, 928,620.30 and 400,903.38

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Solution

The fourth proportional to 672,750.24, 928,620.30 and 400,903.38 is: 553,380.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,750.24 : 928,620.30 = 400,903.38 : x
  2. Step 2: Convert to fraction form
    672,750.24/928,620.30 = 400,903.38/x
  3. Step 3: Cross multiply
    672,750.24x = 928,620.30 × 400,903.38
  4. Step 4: Simplify right side
    672,750.24x = 372,287,017,006.61
  5. Step 5: Solve for x
    x = 372,287,017,006.61/672,750.24
  6. Step 6: Final answer
    x = 553,380.73

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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.