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Finding the Fourth Proportional to 871,282.20, 1,307,004 and 338,843.28

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Solution

The fourth proportional to 871,282.20, 1,307,004 and 338,843.28 is: 508,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,282.20 : 1,307,004 = 338,843.28 : x
  2. Step 2: Convert to fraction form
    871,282.20/1,307,004 = 338,843.28/x
  3. Step 3: Cross multiply
    871,282.20x = 1,307,004 × 338,843.28
  4. Step 4: Simplify right side
    871,282.20x = 442,869,522,333.12
  5. Step 5: Solve for x
    x = 442,869,522,333.12/871,282.20
  6. Step 6: Final answer
    x = 508,296.30

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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.