Home / 1,288,652.53-1,778,282.92-772,691.21

Finding the Fourth Proportional to 1,288,652.53, 1,778,282.92 and 772,691.21

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Solution

The fourth proportional to 1,288,652.53, 1,778,282.92 and 772,691.21 is: 1,066,279.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,652.53 : 1,778,282.92 = 772,691.21 : x
  2. Step 2: Convert to fraction form
    1,288,652.53/1,778,282.92 = 772,691.21/x
  3. Step 3: Cross multiply
    1,288,652.53x = 1,778,282.92 × 772,691.21
  4. Step 4: Simplify right side
    1,288,652.53x = 1,374,063,581,177.13
  5. Step 5: Solve for x
    x = 1,374,063,581,177.13/1,288,652.53
  6. Step 6: Final answer
    x = 1,066,279.35

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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.