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Finding the Fourth Proportional to 922,647.60, 1,384,230.60 and 449,348.40

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Solution

The fourth proportional to 922,647.60, 1,384,230.60 and 449,348.40 is: 674,148.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,647.60 : 1,384,230.60 = 449,348.40 : x
  2. Step 2: Convert to fraction form
    922,647.60/1,384,230.60 = 449,348.40/x
  3. Step 3: Cross multiply
    922,647.60x = 1,384,230.60 × 449,348.40
  4. Step 4: Simplify right side
    922,647.60x = 622,001,805,341.04
  5. Step 5: Solve for x
    x = 622,001,805,341.04/922,647.60
  6. Step 6: Final answer
    x = 674,148.84

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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.