Home / 1,225,185.92-1,690,508.80-715,789.88

Finding the Fourth Proportional to 1,225,185.92, 1,690,508.80 and 715,789.88

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Solution

The fourth proportional to 1,225,185.92, 1,690,508.80 and 715,789.88 is: 987,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,185.92 : 1,690,508.80 = 715,789.88 : x
  2. Step 2: Convert to fraction form
    1,225,185.92/1,690,508.80 = 715,789.88/x
  3. Step 3: Cross multiply
    1,225,185.92x = 1,690,508.80 × 715,789.88
  4. Step 4: Simplify right side
    1,225,185.92x = 1,210,049,091,090.94
  5. Step 5: Solve for x
    x = 1,210,049,091,090.94/1,225,185.92
  6. Step 6: Final answer
    x = 987,645.28

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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.