Home / 442,659,615.20-663,989,422.80-289,777,234.40

Finding the Fourth Proportional to 442,659,615.20, 663,989,422.80 and 289,777,234.40

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Solution

The fourth proportional to 442,659,615.20, 663,989,422.80 and 289,777,234.40 is: 434,665,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,659,615.20 : 663,989,422.80 = 289,777,234.40 : x
  2. Step 2: Convert to fraction form
    442,659,615.20/663,989,422.80 = 289,777,234.40/x
  3. Step 3: Cross multiply
    442,659,615.20x = 663,989,422.80 × 289,777,234.40
  4. Step 4: Simplify right side
    442,659,615.20x = 192,409,018,609,836,288
  5. Step 5: Solve for x
    x = 192,409,018,609,836,288/442,659,615.20
  6. Step 6: Final answer
    x = 434,665,851.60

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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.