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Finding the Fourth Proportional to 519,787.60, 778,759.80 and 322,565.20

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Solution

The fourth proportional to 519,787.60, 778,759.80 and 322,565.20 is: 483,275.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,787.60 : 778,759.80 = 322,565.20 : x
  2. Step 2: Convert to fraction form
    519,787.60/778,759.80 = 322,565.20/x
  3. Step 3: Cross multiply
    519,787.60x = 778,759.80 × 322,565.20
  4. Step 4: Simplify right side
    519,787.60x = 251,200,810,638.96
  5. Step 5: Solve for x
    x = 251,200,810,638.96/519,787.60
  6. Step 6: Final answer
    x = 483,275.88

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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.