Home / 878,487.40-1,319,286.30-679,292.20

Finding the Fourth Proportional to 878,487.40, 1,319,286.30 and 679,292.20

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Solution

The fourth proportional to 878,487.40, 1,319,286.30 and 679,292.20 is: 1,020,140.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,487.40 : 1,319,286.30 = 679,292.20 : x
  2. Step 2: Convert to fraction form
    878,487.40/1,319,286.30 = 679,292.20/x
  3. Step 3: Cross multiply
    878,487.40x = 1,319,286.30 × 679,292.20
  4. Step 4: Simplify right side
    878,487.40x = 896,180,893,156.86
  5. Step 5: Solve for x
    x = 896,180,893,156.86/878,487.40
  6. Step 6: Final answer
    x = 1,020,140.86

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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.