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Finding the Fourth Proportional to 605,709.60, 908,564.40 and 368,930.40

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Solution

The fourth proportional to 605,709.60, 908,564.40 and 368,930.40 is: 553,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,709.60 : 908,564.40 = 368,930.40 : x
  2. Step 2: Convert to fraction form
    605,709.60/908,564.40 = 368,930.40/x
  3. Step 3: Cross multiply
    605,709.60x = 908,564.40 × 368,930.40
  4. Step 4: Simplify right side
    605,709.60x = 335,197,027,517.76
  5. Step 5: Solve for x
    x = 335,197,027,517.76/605,709.60
  6. Step 6: Final answer
    x = 553,395.60

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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.