Home / 430,952,751.93-646,519,915.17-139,797,140.61

Finding the Fourth Proportional to 430,952,751.93, 646,519,915.17 and 139,797,140.61

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Solution

The fourth proportional to 430,952,751.93, 646,519,915.17 and 139,797,140.61 is: 209,725,161.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,952,751.93 : 646,519,915.17 = 139,797,140.61 : x
  2. Step 2: Convert to fraction form
    430,952,751.93/646,519,915.17 = 139,797,140.61/x
  3. Step 3: Cross multiply
    430,952,751.93x = 646,519,915.17 × 139,797,140.61
  4. Step 4: Simplify right side
    430,952,751.93x = 90,381,635,488,185,760
  5. Step 5: Solve for x
    x = 90,381,635,488,185,760/430,952,751.93
  6. Step 6: Final answer
    x = 209,725,161.48

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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.