Home / 399,408,908,948.72-599,319,342,131.92-187,194,600,959.68

Finding the Fourth Proportional to 399,408,908,948.72, 599,319,342,131.92 and 187,194,600,959.68

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Solution

The fourth proportional to 399,408,908,948.72, 599,319,342,131.92 and 187,194,600,959.68 is: 280,888,439,351.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,408,908,948.72 : 599,319,342,131.92 = 187,194,600,959.68 : x
  2. Step 2: Convert to fraction form
    399,408,908,948.72/599,319,342,131.92 = 187,194,600,959.68/x
  3. Step 3: Cross multiply
    399,408,908,948.72x = 599,319,342,131.92 × 187,194,600,959.68
  4. Step 4: Simplify right side
    399,408,908,948.72x = 112,189,345,097,802,707,894,272
  5. Step 5: Solve for x
    x = 112,189,345,097,802,707,894,272/399,408,908,948.72
  6. Step 6: Final answer
    x = 280,888,439,351.78

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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.