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Finding the Fourth Proportional to 552,586.84, 762,526.22 and 310,821.28

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Solution

The fourth proportional to 552,586.84, 762,526.22 and 310,821.28 is: 428,908.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,586.84 : 762,526.22 = 310,821.28 : x
  2. Step 2: Convert to fraction form
    552,586.84/762,526.22 = 310,821.28/x
  3. Step 3: Cross multiply
    552,586.84x = 762,526.22 × 310,821.28
  4. Step 4: Simplify right side
    552,586.84x = 237,009,375,733.96
  5. Step 5: Solve for x
    x = 237,009,375,733.96/552,586.84
  6. Step 6: Final answer
    x = 428,908.83

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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.