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Finding the Fourth Proportional to 636,278.34, 878,011.87 and 374,592.10

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Solution

The fourth proportional to 636,278.34, 878,011.87 and 374,592.10 is: 516,906.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,278.34 : 878,011.87 = 374,592.10 : x
  2. Step 2: Convert to fraction form
    636,278.34/878,011.87 = 374,592.10/x
  3. Step 3: Cross multiply
    636,278.34x = 878,011.87 × 374,592.10
  4. Step 4: Simplify right side
    636,278.34x = 328,896,310,208.23
  5. Step 5: Solve for x
    x = 328,896,310,208.23/636,278.34
  6. Step 6: Final answer
    x = 516,906.34

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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.