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Finding the Fourth Proportional to 636,223.79, 878,010.20 and 374,531.87

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Solution

The fourth proportional to 636,223.79, 878,010.20 and 374,531.87 is: 516,866.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,223.79 : 878,010.20 = 374,531.87 : x
  2. Step 2: Convert to fraction form
    636,223.79/878,010.20 = 374,531.87/x
  3. Step 3: Cross multiply
    636,223.79x = 878,010.20 × 374,531.87
  4. Step 4: Simplify right side
    636,223.79x = 328,842,802,085.07
  5. Step 5: Solve for x
    x = 328,842,802,085.07/636,223.79
  6. Step 6: Final answer
    x = 516,866.56

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1.5x scale

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.