Home / 1,690,141.82-2,332,398.06-915,781.05

Finding the Fourth Proportional to 1,690,141.82, 2,332,398.06 and 915,781.05

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Solution

The fourth proportional to 1,690,141.82, 2,332,398.06 and 915,781.05 is: 1,263,779.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,141.82 : 2,332,398.06 = 915,781.05 : x
  2. Step 2: Convert to fraction form
    1,690,141.82/2,332,398.06 = 915,781.05/x
  3. Step 3: Cross multiply
    1,690,141.82x = 2,332,398.06 × 915,781.05
  4. Step 4: Simplify right side
    1,690,141.82x = 2,135,965,944,404.76
  5. Step 5: Solve for x
    x = 2,135,965,944,404.76/1,690,141.82
  6. Step 6: Final answer
    x = 1,263,779.13

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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.