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Finding the Fourth Proportional to 689,304.55, 951,223.65 and 383,380.02

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Solution

The fourth proportional to 689,304.55, 951,223.65 and 383,380.02 is: 529,055.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,304.55 : 951,223.65 = 383,380.02 : x
  2. Step 2: Convert to fraction form
    689,304.55/951,223.65 = 383,380.02/x
  3. Step 3: Cross multiply
    689,304.55x = 951,223.65 × 383,380.02
  4. Step 4: Simplify right side
    689,304.55x = 364,680,141,961.47
  5. Step 5: Solve for x
    x = 364,680,141,961.47/689,304.55
  6. Step 6: Final answer
    x = 529,055.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.