Home / 1,288,654.90-1,778,286.20-772,693.58

Finding the Fourth Proportional to 1,288,654.90, 1,778,286.20 and 772,693.58

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Solution

The fourth proportional to 1,288,654.90, 1,778,286.20 and 772,693.58 is: 1,066,282.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,654.90 : 1,778,286.20 = 772,693.58 : x
  2. Step 2: Convert to fraction form
    1,288,654.90/1,778,286.20 = 772,693.58/x
  3. Step 3: Cross multiply
    1,288,654.90x = 1,778,286.20 × 772,693.58
  4. Step 4: Simplify right side
    1,288,654.90x = 1,374,070,330,724.84
  5. Step 5: Solve for x
    x = 1,374,070,330,724.84/1,288,654.90
  6. Step 6: Final answer
    x = 1,066,282.63

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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.