Home / 1,278,017.20-1,915,397.70-679,265.20

Finding the Fourth Proportional to 1,278,017.20, 1,915,397.70 and 679,265.20

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Solution

The fourth proportional to 1,278,017.20, 1,915,397.70 and 679,265.20 is: 1,018,032.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,017.20 : 1,915,397.70 = 679,265.20 : x
  2. Step 2: Convert to fraction form
    1,278,017.20/1,915,397.70 = 679,265.20/x
  3. Step 3: Cross multiply
    1,278,017.20x = 1,915,397.70 × 679,265.20
  4. Step 4: Simplify right side
    1,278,017.20x = 1,301,063,001,770.04
  5. Step 5: Solve for x
    x = 1,301,063,001,770.04/1,278,017.20
  6. Step 6: Final answer
    x = 1,018,032.47

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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.