Home / 1,005,138.40-1,387,074.90-552,419.68

Finding the Fourth Proportional to 1,005,138.40, 1,387,074.90 and 552,419.68

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Solution

The fourth proportional to 1,005,138.40, 1,387,074.90 and 552,419.68 is: 762,330.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,138.40 : 1,387,074.90 = 552,419.68 : x
  2. Step 2: Convert to fraction form
    1,005,138.40/1,387,074.90 = 552,419.68/x
  3. Step 3: Cross multiply
    1,005,138.40x = 1,387,074.90 × 552,419.68
  4. Step 4: Simplify right side
    1,005,138.40x = 766,247,472,394.03
  5. Step 5: Solve for x
    x = 766,247,472,394.03/1,005,138.40
  6. Step 6: Final answer
    x = 762,330.31

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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.