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Finding the Fourth Proportional to 922,765.20, 1,384,147.80 and 291,872.40

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Solution

The fourth proportional to 922,765.20, 1,384,147.80 and 291,872.40 is: 437,808.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,765.20 : 1,384,147.80 = 291,872.40 : x
  2. Step 2: Convert to fraction form
    922,765.20/1,384,147.80 = 291,872.40/x
  3. Step 3: Cross multiply
    922,765.20x = 1,384,147.80 × 291,872.40
  4. Step 4: Simplify right side
    922,765.20x = 403,994,540,340.72
  5. Step 5: Solve for x
    x = 403,994,540,340.72/922,765.20
  6. Step 6: Final answer
    x = 437,808.60

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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.