Home / 465,815.92-698,684.88-128,860.72

Finding the Fourth Proportional to 465,815.92, 698,684.88 and 128,860.72

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Solution

The fourth proportional to 465,815.92, 698,684.88 and 128,860.72 is: 193,280.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,815.92 : 698,684.88 = 128,860.72 : x
  2. Step 2: Convert to fraction form
    465,815.92/698,684.88 = 128,860.72/x
  3. Step 3: Cross multiply
    465,815.92x = 698,684.88 × 128,860.72
  4. Step 4: Simplify right side
    465,815.92x = 90,033,036,689.91
  5. Step 5: Solve for x
    x = 90,033,036,689.91/465,815.92
  6. Step 6: Final answer
    x = 193,280.29

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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.