Home / 781,622.40-1,172,397.12-326,025.60

Finding the Fourth Proportional to 781,622.40, 1,172,397.12 and 326,025.60

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Solution

The fourth proportional to 781,622.40, 1,172,397.12 and 326,025.60 is: 489,023.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,622.40 : 1,172,397.12 = 326,025.60 : x
  2. Step 2: Convert to fraction form
    781,622.40/1,172,397.12 = 326,025.60/x
  3. Step 3: Cross multiply
    781,622.40x = 1,172,397.12 × 326,025.60
  4. Step 4: Simplify right side
    781,622.40x = 382,231,474,486.27
  5. Step 5: Solve for x
    x = 382,231,474,486.27/781,622.40
  6. Step 6: Final answer
    x = 489,023.18

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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.