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Finding the Fourth Proportional to 508,458.61, 701,670.96 and 279,019.74

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Solution

The fourth proportional to 508,458.61, 701,670.96 and 279,019.74 is: 385,046.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,458.61 : 701,670.96 = 279,019.74 : x
  2. Step 2: Convert to fraction form
    508,458.61/701,670.96 = 279,019.74/x
  3. Step 3: Cross multiply
    508,458.61x = 701,670.96 × 279,019.74
  4. Step 4: Simplify right side
    508,458.61x = 195,780,048,824.75
  5. Step 5: Solve for x
    x = 195,780,048,824.75/508,458.61
  6. Step 6: Final answer
    x = 385,046.19

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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.