Home / 672,200.10-1,008,300.15-639,540.90

Finding the Fourth Proportional to 672,200.10, 1,008,300.15 and 639,540.90

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Solution

The fourth proportional to 672,200.10, 1,008,300.15 and 639,540.90 is: 959,311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,200.10 : 1,008,300.15 = 639,540.90 : x
  2. Step 2: Convert to fraction form
    672,200.10/1,008,300.15 = 639,540.90/x
  3. Step 3: Cross multiply
    672,200.10x = 1,008,300.15 × 639,540.90
  4. Step 4: Simplify right side
    672,200.10x = 644,849,185,401.14
  5. Step 5: Solve for x
    x = 644,849,185,401.14/672,200.10
  6. Step 6: Final answer
    x = 959,311.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.