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Finding the Fourth Proportional to 978,411.60, 1,468,999.80 and 605,163.60

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Solution

The fourth proportional to 978,411.60, 1,468,999.80 and 605,163.60 is: 908,600.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,411.60 : 1,468,999.80 = 605,163.60 : x
  2. Step 2: Convert to fraction form
    978,411.60/1,468,999.80 = 605,163.60/x
  3. Step 3: Cross multiply
    978,411.60x = 1,468,999.80 × 605,163.60
  4. Step 4: Simplify right side
    978,411.60x = 888,985,207,367.28
  5. Step 5: Solve for x
    x = 888,985,207,367.28/978,411.60
  6. Step 6: Final answer
    x = 908,600.44

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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.