Home / 399,408,908,940.72-599,319,342,119.92-187,194,600,951.68

Finding the Fourth Proportional to 399,408,908,940.72, 599,319,342,119.92 and 187,194,600,951.68

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Solution

The fourth proportional to 399,408,908,940.72, 599,319,342,119.92 and 187,194,600,951.68 is: 280,888,439,339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,408,908,940.72 : 599,319,342,119.92 = 187,194,600,951.68 : x
  2. Step 2: Convert to fraction form
    399,408,908,940.72/599,319,342,119.92 = 187,194,600,951.68/x
  3. Step 3: Cross multiply
    399,408,908,940.72x = 599,319,342,119.92 × 187,194,600,951.68
  4. Step 4: Simplify right side
    399,408,908,940.72x = 112,189,345,090,761,813,655,552
  5. Step 5: Solve for x
    x = 112,189,345,090,761,813,655,552/399,408,908,940.72
  6. Step 6: Final answer
    x = 280,888,439,339.78

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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.