Home / 465,354,049.46-642,188,431.61-256,513,679.69

Finding the Fourth Proportional to 465,354,049.46, 642,188,431.61 and 256,513,679.69

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Solution

The fourth proportional to 465,354,049.46, 642,188,431.61 and 256,513,679.69 is: 353,988,791.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,354,049.46 : 642,188,431.61 = 256,513,679.69 : x
  2. Step 2: Convert to fraction form
    465,354,049.46/642,188,431.61 = 256,513,679.69/x
  3. Step 3: Cross multiply
    465,354,049.46x = 642,188,431.61 × 256,513,679.69
  4. Step 4: Simplify right side
    465,354,049.46x = 164,730,117,642,137,504
  5. Step 5: Solve for x
    x = 164,730,117,642,137,504/465,354,049.46
  6. Step 6: Final answer
    x = 353,988,791.62

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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.