Home / 1,221,753.47-1,686,076.58-763,139.57

Finding the Fourth Proportional to 1,221,753.47, 1,686,076.58 and 763,139.57

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Solution

The fourth proportional to 1,221,753.47, 1,686,076.58 and 763,139.57 is: 1,053,168.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,753.47 : 1,686,076.58 = 763,139.57 : x
  2. Step 2: Convert to fraction form
    1,221,753.47/1,686,076.58 = 763,139.57/x
  3. Step 3: Cross multiply
    1,221,753.47x = 1,686,076.58 × 763,139.57
  4. Step 4: Simplify right side
    1,221,753.47x = 1,286,711,756,248.27
  5. Step 5: Solve for x
    x = 1,286,711,756,248.27/1,221,753.47
  6. Step 6: Final answer
    x = 1,053,168.08

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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.