Home / 1,278,928.66-1,764,502.40-911,463.68

Finding the Fourth Proportional to 1,278,928.66, 1,764,502.40 and 911,463.68

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Solution

The fourth proportional to 1,278,928.66, 1,764,502.40 and 911,463.68 is: 1,257,521.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,928.66 : 1,764,502.40 = 911,463.68 : x
  2. Step 2: Convert to fraction form
    1,278,928.66/1,764,502.40 = 911,463.68/x
  3. Step 3: Cross multiply
    1,278,928.66x = 1,764,502.40 × 911,463.68
  4. Step 4: Simplify right side
    1,278,928.66x = 1,608,279,850,872.83
  5. Step 5: Solve for x
    x = 1,608,279,850,872.83/1,278,928.66
  6. Step 6: Final answer
    x = 1,257,521.16

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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.