Home / 431,121,746.88-646,673,335.56-120,221,079.40

Finding the Fourth Proportional to 431,121,746.88, 646,673,335.56 and 120,221,079.40

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Solution

The fourth proportional to 431,121,746.88, 646,673,335.56 and 120,221,079.40 is: 180,329,029.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,121,746.88 : 646,673,335.56 = 120,221,079.40 : x
  2. Step 2: Convert to fraction form
    431,121,746.88/646,673,335.56 = 120,221,079.40/x
  3. Step 3: Cross multiply
    431,121,746.88x = 646,673,335.56 × 120,221,079.40
  4. Step 4: Simplify right side
    431,121,746.88x = 77,743,766,420,221,600
  5. Step 5: Solve for x
    x = 77,743,766,420,221,600/431,121,746.88
  6. Step 6: Final answer
    x = 180,329,029.98

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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.