Home / 431,204,427.20-646,806,640.80-172,291,620.80

Finding the Fourth Proportional to 431,204,427.20, 646,806,640.80 and 172,291,620.80

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Solution

The fourth proportional to 431,204,427.20, 646,806,640.80 and 172,291,620.80 is: 258,437,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,204,427.20 : 646,806,640.80 = 172,291,620.80 : x
  2. Step 2: Convert to fraction form
    431,204,427.20/646,806,640.80 = 172,291,620.80/x
  3. Step 3: Cross multiply
    431,204,427.20x = 646,806,640.80 × 172,291,620.80
  4. Step 4: Simplify right side
    431,204,427.20x = 111,439,364,487,635,408
  5. Step 5: Solve for x
    x = 111,439,364,487,635,408/431,204,427.20
  6. Step 6: Final answer
    x = 258,437,431.20

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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.