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Finding the Fourth Proportional to 835,205.60, 1,255,432.80 and 819,459.20

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Solution

The fourth proportional to 835,205.60, 1,255,432.80 and 819,459.20 is: 1,231,763.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,205.60 : 1,255,432.80 = 819,459.20 : x
  2. Step 2: Convert to fraction form
    835,205.60/1,255,432.80 = 819,459.20/x
  3. Step 3: Cross multiply
    835,205.60x = 1,255,432.80 × 819,459.20
  4. Step 4: Simplify right side
    835,205.60x = 1,028,775,957,941.76
  5. Step 5: Solve for x
    x = 1,028,775,957,941.76/835,205.60
  6. Step 6: Final answer
    x = 1,231,763.72

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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.