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Finding the Fourth Proportional to 636,278.84, 878,012.57 and 374,592.60

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Solution

The fourth proportional to 636,278.84, 878,012.57 and 374,592.60 is: 516,907.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,278.84 : 878,012.57 = 374,592.60 : x
  2. Step 2: Convert to fraction form
    636,278.84/878,012.57 = 374,592.60/x
  3. Step 3: Cross multiply
    636,278.84x = 878,012.57 × 374,592.60
  4. Step 4: Simplify right side
    636,278.84x = 328,897,009,556.02
  5. Step 5: Solve for x
    x = 328,897,009,556.02/636,278.84
  6. Step 6: Final answer
    x = 516,907.04

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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.