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Finding the Fourth Proportional to 587,930.04, 811,342.38 and 319,657.40

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Solution

The fourth proportional to 587,930.04, 811,342.38 and 319,657.40 is: 441,126.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,930.04 : 811,342.38 = 319,657.40 : x
  2. Step 2: Convert to fraction form
    587,930.04/811,342.38 = 319,657.40/x
  3. Step 3: Cross multiply
    587,930.04x = 811,342.38 × 319,657.40
  4. Step 4: Simplify right side
    587,930.04x = 259,351,595,700.61
  5. Step 5: Solve for x
    x = 259,351,595,700.61/587,930.04
  6. Step 6: Final answer
    x = 441,126.63

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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.