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Finding the Fourth Proportional to 769,745.60, 1,156,000.80 and 559,620.80

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Solution

The fourth proportional to 769,745.60, 1,156,000.80 and 559,620.80 is: 840,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,745.60 : 1,156,000.80 = 559,620.80 : x
  2. Step 2: Convert to fraction form
    769,745.60/1,156,000.80 = 559,620.80/x
  3. Step 3: Cross multiply
    769,745.60x = 1,156,000.80 × 559,620.80
  4. Step 4: Simplify right side
    769,745.60x = 646,922,092,496.64
  5. Step 5: Solve for x
    x = 646,922,092,496.64/769,745.60
  6. Step 6: Final answer
    x = 840,436.23

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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.