Home / 878,654.40-1,319,536.80-679,459.20

Finding the Fourth Proportional to 878,654.40, 1,319,536.80 and 679,459.20

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Solution

The fourth proportional to 878,654.40, 1,319,536.80 and 679,459.20 is: 1,020,391.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,654.40 : 1,319,536.80 = 679,459.20 : x
  2. Step 2: Convert to fraction form
    878,654.40/1,319,536.80 = 679,459.20/x
  3. Step 3: Cross multiply
    878,654.40x = 1,319,536.80 × 679,459.20
  4. Step 4: Simplify right side
    878,654.40x = 896,571,418,498.56
  5. Step 5: Solve for x
    x = 896,571,418,498.56/878,654.40
  6. Step 6: Final answer
    x = 1,020,391.43

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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.