Home / 431,200,831.20-646,801,246.80-120,307,846.20

Finding the Fourth Proportional to 431,200,831.20, 646,801,246.80 and 120,307,846.20

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Solution

The fourth proportional to 431,200,831.20, 646,801,246.80 and 120,307,846.20 is: 180,461,769.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,200,831.20 : 646,801,246.80 = 120,307,846.20 : x
  2. Step 2: Convert to fraction form
    431,200,831.20/646,801,246.80 = 120,307,846.20/x
  3. Step 3: Cross multiply
    431,200,831.20x = 646,801,246.80 × 120,307,846.20
  4. Step 4: Simplify right side
    431,200,831.20x = 77,815,264,921,982,640
  5. Step 5: Solve for x
    x = 77,815,264,921,982,640/431,200,831.20
  6. Step 6: Final answer
    x = 180,461,769.30

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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.