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Finding the Fourth Proportional to 559,691.55, 772,392.39 and 317,969.73

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Solution

The fourth proportional to 559,691.55, 772,392.39 and 317,969.73 is: 438,808.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,691.55 : 772,392.39 = 317,969.73 : x
  2. Step 2: Convert to fraction form
    559,691.55/772,392.39 = 317,969.73/x
  3. Step 3: Cross multiply
    559,691.55x = 772,392.39 × 317,969.73
  4. Step 4: Simplify right side
    559,691.55x = 245,597,399,702.36
  5. Step 5: Solve for x
    x = 245,597,399,702.36/559,691.55
  6. Step 6: Final answer
    x = 438,808.48

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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.