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Finding the Fourth Proportional to 639,711.42, 882,803.07 and 353,232.06

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Solution

The fourth proportional to 639,711.42, 882,803.07 and 353,232.06 is: 487,460.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,711.42 : 882,803.07 = 353,232.06 : x
  2. Step 2: Convert to fraction form
    639,711.42/882,803.07 = 353,232.06/x
  3. Step 3: Cross multiply
    639,711.42x = 882,803.07 × 353,232.06
  4. Step 4: Simplify right side
    639,711.42x = 311,834,346,990.42
  5. Step 5: Solve for x
    x = 311,834,346,990.42/639,711.42
  6. Step 6: Final answer
    x = 487,460.97

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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.