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Finding the Fourth Proportional to 898,989.60, 1,347,793.20 and 505,005.60

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Solution

The fourth proportional to 898,989.60, 1,347,793.20 and 505,005.60 is: 757,120.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,989.60 : 1,347,793.20 = 505,005.60 : x
  2. Step 2: Convert to fraction form
    898,989.60/1,347,793.20 = 505,005.60/x
  3. Step 3: Cross multiply
    898,989.60x = 1,347,793.20 × 505,005.60
  4. Step 4: Simplify right side
    898,989.60x = 680,643,113,641.92
  5. Step 5: Solve for x
    x = 680,643,113,641.92/898,989.60
  6. Step 6: Final answer
    x = 757,120.12

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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.