Home / 430,952,696.43-646,519,831.88-139,797,085.11

Finding the Fourth Proportional to 430,952,696.43, 646,519,831.88 and 139,797,085.11

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Solution

The fourth proportional to 430,952,696.43, 646,519,831.88 and 139,797,085.11 is: 209,725,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,952,696.43 : 646,519,831.88 = 139,797,085.11 : x
  2. Step 2: Convert to fraction form
    430,952,696.43/646,519,831.88 = 139,797,085.11/x
  3. Step 3: Cross multiply
    430,952,696.43x = 646,519,831.88 × 139,797,085.11
  4. Step 4: Simplify right side
    430,952,696.43x = 90,381,587,961,932,272
  5. Step 5: Solve for x
    x = 90,381,587,961,932,272/430,952,696.43
  6. Step 6: Final answer
    x = 209,725,078.21

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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.