Home / 1,125,825.60-1,689,967.20-628,161.60

Finding the Fourth Proportional to 1,125,825.60, 1,689,967.20 and 628,161.60

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Solution

The fourth proportional to 1,125,825.60, 1,689,967.20 and 628,161.60 is: 942,928.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,825.60 : 1,689,967.20 = 628,161.60 : x
  2. Step 2: Convert to fraction form
    1,125,825.60/1,689,967.20 = 628,161.60/x
  3. Step 3: Cross multiply
    1,125,825.60x = 1,689,967.20 × 628,161.60
  4. Step 4: Simplify right side
    1,125,825.60x = 1,061,572,500,299.52
  5. Step 5: Solve for x
    x = 1,061,572,500,299.52/1,125,825.60
  6. Step 6: Final answer
    x = 942,928.02

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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.