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Finding the Fourth Proportional to 634,314.20, 875,394.06 and 419,076.68

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Solution

The fourth proportional to 634,314.20, 875,394.06 and 419,076.68 is: 578,352.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,314.20 : 875,394.06 = 419,076.68 : x
  2. Step 2: Convert to fraction form
    634,314.20/875,394.06 = 419,076.68/x
  3. Step 3: Cross multiply
    634,314.20x = 875,394.06 × 419,076.68
  4. Step 4: Simplify right side
    634,314.20x = 366,857,236,356.52
  5. Step 5: Solve for x
    x = 366,857,236,356.52/634,314.20
  6. Step 6: Final answer
    x = 578,352.55

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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.