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Finding the Fourth Proportional to 640,468.95, 883,850.61 and 350,080.91

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Solution

The fourth proportional to 640,468.95, 883,850.61 and 350,080.91 is: 483,113.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,468.95 : 883,850.61 = 350,080.91 : x
  2. Step 2: Convert to fraction form
    640,468.95/883,850.61 = 350,080.91/x
  3. Step 3: Cross multiply
    640,468.95x = 883,850.61 × 350,080.91
  4. Step 4: Simplify right side
    640,468.95x = 309,419,227,562.07
  5. Step 5: Solve for x
    x = 309,419,227,562.07/640,468.95
  6. Step 6: Final answer
    x = 483,113.55

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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.