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Finding the Fourth Proportional to 552,649.89, 762,649.03 and 310,931.88

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Solution

The fourth proportional to 552,649.89, 762,649.03 and 310,931.88 is: 429,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,649.89 : 762,649.03 = 310,931.88 : x
  2. Step 2: Convert to fraction form
    552,649.89/762,649.03 = 310,931.88/x
  3. Step 3: Cross multiply
    552,649.89x = 762,649.03 × 310,931.88
  4. Step 4: Simplify right side
    552,649.89x = 237,131,897,807.37
  5. Step 5: Solve for x
    x = 237,131,897,807.37/552,649.89
  6. Step 6: Final answer
    x = 429,081.60

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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.