Home / 1,221,753.97-1,686,077.27-763,140.07

Finding the Fourth Proportional to 1,221,753.97, 1,686,077.27 and 763,140.07

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Solution

The fourth proportional to 1,221,753.97, 1,686,077.27 and 763,140.07 is: 1,053,168.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,753.97 : 1,686,077.27 = 763,140.07 : x
  2. Step 2: Convert to fraction form
    1,221,753.97/1,686,077.27 = 763,140.07/x
  3. Step 3: Cross multiply
    1,221,753.97x = 1,686,077.27 × 763,140.07
  4. Step 4: Simplify right side
    1,221,753.97x = 1,286,713,125,853.21
  5. Step 5: Solve for x
    x = 1,286,713,125,853.21/1,221,753.97
  6. Step 6: Final answer
    x = 1,053,168.77

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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.