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Finding the Fourth Proportional to 672,487.46, 928,018.85 and 366,561.20

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Solution

The fourth proportional to 672,487.46, 928,018.85 and 366,561.20 is: 505,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,487.46 : 928,018.85 = 366,561.20 : x
  2. Step 2: Convert to fraction form
    672,487.46/928,018.85 = 366,561.20/x
  3. Step 3: Cross multiply
    672,487.46x = 928,018.85 × 366,561.20
  4. Step 4: Simplify right side
    672,487.46x = 340,175,696,805.72
  5. Step 5: Solve for x
    x = 340,175,696,805.72/672,487.46
  6. Step 6: Final answer
    x = 505,846.90

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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.