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Finding the Fourth Proportional to 658,135.30, 988,369.35 and 508,738.90

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Solution

The fourth proportional to 658,135.30, 988,369.35 and 508,738.90 is: 764,009.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,135.30 : 988,369.35 = 508,738.90 : x
  2. Step 2: Convert to fraction form
    658,135.30/988,369.35 = 508,738.90/x
  3. Step 3: Cross multiply
    658,135.30x = 988,369.35 × 508,738.90
  4. Step 4: Simplify right side
    658,135.30x = 502,821,935,912.72
  5. Step 5: Solve for x
    x = 502,821,935,912.72/658,135.30
  6. Step 6: Final answer
    x = 764,009.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.