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Finding the Fourth Proportional to 494,729.61, 740,973.11 and 387,444.84

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Solution

The fourth proportional to 494,729.61, 740,973.11 and 387,444.84 is: 580,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,729.61 : 740,973.11 = 387,444.84 : x
  2. Step 2: Convert to fraction form
    494,729.61/740,973.11 = 387,444.84/x
  3. Step 3: Cross multiply
    494,729.61x = 740,973.11 × 387,444.84
  4. Step 4: Simplify right side
    494,729.61x = 287,086,206,111.03
  5. Step 5: Solve for x
    x = 287,086,206,111.03/494,729.61
  6. Step 6: Final answer
    x = 580,289.11

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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.