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Finding the Fourth Proportional to 507,979.80, 701,013.11 and 281,625.30

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Solution

The fourth proportional to 507,979.80, 701,013.11 and 281,625.30 is: 388,643.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,979.80 : 701,013.11 = 281,625.30 : x
  2. Step 2: Convert to fraction form
    507,979.80/701,013.11 = 281,625.30/x
  3. Step 3: Cross multiply
    507,979.80x = 701,013.11 × 281,625.30
  4. Step 4: Simplify right side
    507,979.80x = 197,423,027,407.68
  5. Step 5: Solve for x
    x = 197,423,027,407.68/507,979.80
  6. Step 6: Final answer
    x = 388,643.46

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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.