Home / 1,245,649.65-1,718,996.51-672,689.78

Finding the Fourth Proportional to 1,245,649.65, 1,718,996.51 and 672,689.78

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Solution

The fourth proportional to 1,245,649.65, 1,718,996.51 and 672,689.78 is: 928,311.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,649.65 : 1,718,996.51 = 672,689.78 : x
  2. Step 2: Convert to fraction form
    1,245,649.65/1,718,996.51 = 672,689.78/x
  3. Step 3: Cross multiply
    1,245,649.65x = 1,718,996.51 × 672,689.78
  4. Step 4: Simplify right side
    1,245,649.65x = 1,156,351,372,174.24
  5. Step 5: Solve for x
    x = 1,156,351,372,174.24/1,245,649.65
  6. Step 6: Final answer
    x = 928,311.88

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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.