Home / 431,292,045.20-646,938,067.80-172,692,854.60

Finding the Fourth Proportional to 431,292,045.20, 646,938,067.80 and 172,692,854.60

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Solution

The fourth proportional to 431,292,045.20, 646,938,067.80 and 172,692,854.60 is: 259,039,281.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,292,045.20 : 646,938,067.80 = 172,692,854.60 : x
  2. Step 2: Convert to fraction form
    431,292,045.20/646,938,067.80 = 172,692,854.60/x
  3. Step 3: Cross multiply
    431,292,045.20x = 646,938,067.80 × 172,692,854.60
  4. Step 4: Simplify right side
    431,292,045.20x = 111,721,581,677,790,336
  5. Step 5: Solve for x
    x = 111,721,581,677,790,336/431,292,045.20
  6. Step 6: Final answer
    x = 259,039,281.90

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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.