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Finding the Fourth Proportional to 636,223.28, 878,009.51 and 374,531.37

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Solution

The fourth proportional to 636,223.28, 878,009.51 and 374,531.37 is: 516,865.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,223.28 : 878,009.51 = 374,531.37 : x
  2. Step 2: Convert to fraction form
    636,223.28/878,009.51 = 374,531.37/x
  3. Step 3: Cross multiply
    636,223.28x = 878,009.51 × 374,531.37
  4. Step 4: Simplify right side
    636,223.28x = 328,842,104,239.84
  5. Step 5: Solve for x
    x = 328,842,104,239.84/636,223.28
  6. Step 6: Final answer
    x = 516,865.88

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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.