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Finding the Fourth Proportional to 634,138.78, 875,062.94 and 362,169.12

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Solution

The fourth proportional to 634,138.78, 875,062.94 and 362,169.12 is: 499,765.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,138.78 : 875,062.94 = 362,169.12 : x
  2. Step 2: Convert to fraction form
    634,138.78/875,062.94 = 362,169.12/x
  3. Step 3: Cross multiply
    634,138.78x = 875,062.94 × 362,169.12
  4. Step 4: Simplify right side
    634,138.78x = 316,920,774,924.41
  5. Step 5: Solve for x
    x = 316,920,774,924.41/634,138.78
  6. Step 6: Final answer
    x = 499,765.64

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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.