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Finding the Fourth Proportional to 559,664.11, 772,339.14 and 317,959.97

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Solution

The fourth proportional to 559,664.11, 772,339.14 and 317,959.97 is: 438,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,664.11 : 772,339.14 = 317,959.97 : x
  2. Step 2: Convert to fraction form
    559,664.11/772,339.14 = 317,959.97/x
  3. Step 3: Cross multiply
    559,664.11x = 772,339.14 × 317,959.97
  4. Step 4: Simplify right side
    559,664.11x = 245,572,925,922.53
  5. Step 5: Solve for x
    x = 245,572,925,922.53/559,664.11
  6. Step 6: Final answer
    x = 438,786.27

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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.