Home / 1,278,148.59-1,917,091.62-678,473.19

Finding the Fourth Proportional to 1,278,148.59, 1,917,091.62 and 678,473.19

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Solution

The fourth proportional to 1,278,148.59, 1,917,091.62 and 678,473.19 is: 1,017,640.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,148.59 : 1,917,091.62 = 678,473.19 : x
  2. Step 2: Convert to fraction form
    1,278,148.59/1,917,091.62 = 678,473.19/x
  3. Step 3: Cross multiply
    1,278,148.59x = 1,917,091.62 × 678,473.19
  4. Step 4: Simplify right side
    1,278,148.59x = 1,300,695,266,943.67
  5. Step 5: Solve for x
    x = 1,300,695,266,943.67/1,278,148.59
  6. Step 6: Final answer
    x = 1,017,640.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.