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Finding the Fourth Proportional to 643,373.70, 964,404.45 and 376,997.10

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Solution

The fourth proportional to 643,373.70, 964,404.45 and 376,997.10 is: 565,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,373.70 : 964,404.45 = 376,997.10 : x
  2. Step 2: Convert to fraction form
    643,373.70/964,404.45 = 376,997.10/x
  3. Step 3: Cross multiply
    643,373.70x = 964,404.45 × 376,997.10
  4. Step 4: Simplify right side
    643,373.70x = 363,577,680,877.10
  5. Step 5: Solve for x
    x = 363,577,680,877.10/643,373.70
  6. Step 6: Final answer
    x = 565,111.20

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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.