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Finding the Fourth Proportional to 698,793.60, 1,048,651.20 and 255,561.60

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Solution

The fourth proportional to 698,793.60, 1,048,651.20 and 255,561.60 is: 383,510.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,793.60 : 1,048,651.20 = 255,561.60 : x
  2. Step 2: Convert to fraction form
    698,793.60/1,048,651.20 = 255,561.60/x
  3. Step 3: Cross multiply
    698,793.60x = 1,048,651.20 × 255,561.60
  4. Step 4: Simplify right side
    698,793.60x = 267,994,978,513.92
  5. Step 5: Solve for x
    x = 267,994,978,513.92/698,793.60
  6. Step 6: Final answer
    x = 383,510.92

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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.