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Finding the Fourth Proportional to 552,069.43, 761,859 and 310,349.88

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Solution

The fourth proportional to 552,069.43, 761,859 and 310,349.88 is: 428,284.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,069.43 : 761,859 = 310,349.88 : x
  2. Step 2: Convert to fraction form
    552,069.43/761,859 = 310,349.88/x
  3. Step 3: Cross multiply
    552,069.43x = 761,859 × 310,349.88
  4. Step 4: Simplify right side
    552,069.43x = 236,442,849,226.92
  5. Step 5: Solve for x
    x = 236,442,849,226.92/552,069.43
  6. Step 6: Final answer
    x = 428,284.63

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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.