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Finding the Fourth Proportional to 676,120.60, 1,012,212.60 and 656,437.60

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Solution

The fourth proportional to 676,120.60, 1,012,212.60 and 656,437.60 is: 982,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,120.60 : 1,012,212.60 = 656,437.60 : x
  2. Step 2: Convert to fraction form
    676,120.60/1,012,212.60 = 656,437.60/x
  3. Step 3: Cross multiply
    676,120.60x = 1,012,212.60 × 656,437.60
  4. Step 4: Simplify right side
    676,120.60x = 664,454,409,833.76
  5. Step 5: Solve for x
    x = 664,454,409,833.76/676,120.60
  6. Step 6: Final answer
    x = 982,745.40

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1.5x scale

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.