Home / 1,288,654.77-1,778,286.02-772,693.46

Finding the Fourth Proportional to 1,288,654.77, 1,778,286.02 and 772,693.46

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Solution

The fourth proportional to 1,288,654.77, 1,778,286.02 and 772,693.46 is: 1,066,282.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,654.77 : 1,778,286.02 = 772,693.46 : x
  2. Step 2: Convert to fraction form
    1,288,654.77/1,778,286.02 = 772,693.46/x
  3. Step 3: Cross multiply
    1,288,654.77x = 1,778,286.02 × 772,693.46
  4. Step 4: Simplify right side
    1,288,654.77x = 1,374,069,977,663.43
  5. Step 5: Solve for x
    x = 1,374,069,977,663.43/1,288,654.77
  6. Step 6: Final answer
    x = 1,066,282.46

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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.