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Finding the Fourth Proportional to 521,968.88, 720,670.10 and 326,034.87

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Solution

The fourth proportional to 521,968.88, 720,670.10 and 326,034.87 is: 450,148.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,968.88 : 720,670.10 = 326,034.87 : x
  2. Step 2: Convert to fraction form
    521,968.88/720,670.10 = 326,034.87/x
  3. Step 3: Cross multiply
    521,968.88x = 720,670.10 × 326,034.87
  4. Step 4: Simplify right side
    521,968.88x = 234,963,582,087.47
  5. Step 5: Solve for x
    x = 234,963,582,087.47/521,968.88
  6. Step 6: Final answer
    x = 450,148.64

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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.