Home / 970,660.32-1,339,116.68-644,127.32

Finding the Fourth Proportional to 970,660.32, 1,339,116.68 and 644,127.32

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Solution

The fourth proportional to 970,660.32, 1,339,116.68 and 644,127.32 is: 888,633.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,660.32 : 1,339,116.68 = 644,127.32 : x
  2. Step 2: Convert to fraction form
    970,660.32/1,339,116.68 = 644,127.32/x
  3. Step 3: Cross multiply
    970,660.32x = 1,339,116.68 × 644,127.32
  4. Step 4: Simplify right side
    970,660.32x = 862,561,633,170.43
  5. Step 5: Solve for x
    x = 862,561,633,170.43/970,660.32
  6. Step 6: Final answer
    x = 888,633.87

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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.