Home / 431,325,881.30-646,988,821.95-124,627,999.70

Finding the Fourth Proportional to 431,325,881.30, 646,988,821.95 and 124,627,999.70

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Solution

The fourth proportional to 431,325,881.30, 646,988,821.95 and 124,627,999.70 is: 186,941,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,325,881.30 : 646,988,821.95 = 124,627,999.70 : x
  2. Step 2: Convert to fraction form
    431,325,881.30/646,988,821.95 = 124,627,999.70/x
  3. Step 3: Cross multiply
    431,325,881.30x = 646,988,821.95 × 124,627,999.70
  4. Step 4: Simplify right side
    431,325,881.30x = 80,632,922,707,887,968
  5. Step 5: Solve for x
    x = 80,632,922,707,887,968/431,325,881.30
  6. Step 6: Final answer
    x = 186,941,999.55

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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.