Home / 1,245,649.30-1,718,996.01-672,689.45

Finding the Fourth Proportional to 1,245,649.30, 1,718,996.01 and 672,689.45

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Solution

The fourth proportional to 1,245,649.30, 1,718,996.01 and 672,689.45 is: 928,311.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,649.30 : 1,718,996.01 = 672,689.45 : x
  2. Step 2: Convert to fraction form
    1,245,649.30/1,718,996.01 = 672,689.45/x
  3. Step 3: Cross multiply
    1,245,649.30x = 1,718,996.01 × 672,689.45
  4. Step 4: Simplify right side
    1,245,649.30x = 1,156,350,480,519.09
  5. Step 5: Solve for x
    x = 1,156,350,480,519.09/1,245,649.30
  6. Step 6: Final answer
    x = 928,311.43

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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.