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Finding the Fourth Proportional to 552,649.84, 762,648.96 and 310,931.83

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Solution

The fourth proportional to 552,649.84, 762,648.96 and 310,931.83 is: 429,081.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,649.84 : 762,648.96 = 310,931.83 : x
  2. Step 2: Convert to fraction form
    552,649.84/762,648.96 = 310,931.83/x
  3. Step 3: Cross multiply
    552,649.84x = 762,648.96 × 310,931.83
  4. Step 4: Simplify right side
    552,649.84x = 237,131,840,289.79
  5. Step 5: Solve for x
    x = 237,131,840,289.79/552,649.84
  6. Step 6: Final answer
    x = 429,081.53

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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.