Home / 1,098,714.92-1,515,564.42-645,633.32

Finding the Fourth Proportional to 1,098,714.92, 1,515,564.42 and 645,633.32

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Solution

The fourth proportional to 1,098,714.92, 1,515,564.42 and 645,633.32 is: 890,584.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,714.92 : 1,515,564.42 = 645,633.32 : x
  2. Step 2: Convert to fraction form
    1,098,714.92/1,515,564.42 = 645,633.32/x
  3. Step 3: Cross multiply
    1,098,714.92x = 1,515,564.42 × 645,633.32
  4. Step 4: Simplify right side
    1,098,714.92x = 978,498,888,158.47
  5. Step 5: Solve for x
    x = 978,498,888,158.47/1,098,714.92
  6. Step 6: Final answer
    x = 890,584.87

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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.