Home / 672,642.12-1,008,963.18-639,006.60

Finding the Fourth Proportional to 672,642.12, 1,008,963.18 and 639,006.60

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Solution

The fourth proportional to 672,642.12, 1,008,963.18 and 639,006.60 is: 958,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,642.12 : 1,008,963.18 = 639,006.60 : x
  2. Step 2: Convert to fraction form
    672,642.12/1,008,963.18 = 639,006.60/x
  3. Step 3: Cross multiply
    672,642.12x = 1,008,963.18 × 639,006.60
  4. Step 4: Simplify right side
    672,642.12x = 644,734,131,176.99
  5. Step 5: Solve for x
    x = 644,734,131,176.99/672,642.12
  6. Step 6: Final answer
    x = 958,509.90

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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.