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Finding the Fourth Proportional to 550,680.64, 760,387.44 and 448,721.44

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Solution

The fourth proportional to 550,680.64, 760,387.44 and 448,721.44 is: 619,600.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,680.64 : 760,387.44 = 448,721.44 : x
  2. Step 2: Convert to fraction form
    550,680.64/760,387.44 = 448,721.44/x
  3. Step 3: Cross multiply
    550,680.64x = 760,387.44 × 448,721.44
  4. Step 4: Simplify right side
    550,680.64x = 341,202,147,034.71
  5. Step 5: Solve for x
    x = 341,202,147,034.71/550,680.64
  6. Step 6: Final answer
    x = 619,600.77

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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.