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Finding the Fourth Proportional to 922,981.60, 1,384,515.60 and 291,944.80

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Solution

The fourth proportional to 922,981.60, 1,384,515.60 and 291,944.80 is: 437,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,981.60 : 1,384,515.60 = 291,944.80 : x
  2. Step 2: Convert to fraction form
    922,981.60/1,384,515.60 = 291,944.80/x
  3. Step 3: Cross multiply
    922,981.60x = 1,384,515.60 × 291,944.80
  4. Step 4: Simplify right side
    922,981.60x = 404,202,129,938.88
  5. Step 5: Solve for x
    x = 404,202,129,938.88/922,981.60
  6. Step 6: Final answer
    x = 437,930.86

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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.