Home / 639,314.42-882,368.18-381,207.97

Finding the Fourth Proportional to 639,314.42, 882,368.18 and 381,207.97

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Solution

The fourth proportional to 639,314.42, 882,368.18 and 381,207.97 is: 526,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,314.42 : 882,368.18 = 381,207.97 : x
  2. Step 2: Convert to fraction form
    639,314.42/882,368.18 = 381,207.97/x
  3. Step 3: Cross multiply
    639,314.42x = 882,368.18 × 381,207.97
  4. Step 4: Simplify right side
    639,314.42x = 336,365,785,461.14
  5. Step 5: Solve for x
    x = 336,365,785,461.14/639,314.42
  6. Step 6: Final answer
    x = 526,135.15

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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.