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Finding the Fourth Proportional to 1,295,787.20, 1,942,255.20 and 453,905.60

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Solution

The fourth proportional to 1,295,787.20, 1,942,255.20 and 453,905.60 is: 680,359.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,787.20 : 1,942,255.20 = 453,905.60 : x
  2. Step 2: Convert to fraction form
    1,295,787.20/1,942,255.20 = 453,905.60/x
  3. Step 3: Cross multiply
    1,295,787.20x = 1,942,255.20 × 453,905.60
  4. Step 4: Simplify right side
    1,295,787.20x = 881,600,511,909.12
  5. Step 5: Solve for x
    x = 881,600,511,909.12/1,295,787.20
  6. Step 6: Final answer
    x = 680,359.02

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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.