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Finding the Fourth Proportional to 645,671.52, 890,694.72 and 377,244

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Solution

The fourth proportional to 645,671.52, 890,694.72 and 377,244 is: 520,402.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,671.52 : 890,694.72 = 377,244 : x
  2. Step 2: Convert to fraction form
    645,671.52/890,694.72 = 377,244/x
  3. Step 3: Cross multiply
    645,671.52x = 890,694.72 × 377,244
  4. Step 4: Simplify right side
    645,671.52x = 336,009,238,951.68
  5. Step 5: Solve for x
    x = 336,009,238,951.68/645,671.52
  6. Step 6: Final answer
    x = 520,402.76

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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.