Home / 638,440,028.10-957,660,042.15-347,194,613.70

Finding the Fourth Proportional to 638,440,028.10, 957,660,042.15 and 347,194,613.70

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Solution

The fourth proportional to 638,440,028.10, 957,660,042.15 and 347,194,613.70 is: 520,791,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,440,028.10 : 957,660,042.15 = 347,194,613.70 : x
  2. Step 2: Convert to fraction form
    638,440,028.10/957,660,042.15 = 347,194,613.70/x
  3. Step 3: Cross multiply
    638,440,028.10x = 957,660,042.15 × 347,194,613.70
  4. Step 4: Simplify right side
    638,440,028.10x = 332,494,408,390,194,944
  5. Step 5: Solve for x
    x = 332,494,408,390,194,944/638,440,028.10
  6. Step 6: Final answer
    x = 520,791,920.55

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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.