Home / 391,079,307.06-539,680,766.04-212,458,580.64

Finding the Fourth Proportional to 391,079,307.06, 539,680,766.04 and 212,458,580.64

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Solution

The fourth proportional to 391,079,307.06, 539,680,766.04 and 212,458,580.64 is: 293,188,127.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,079,307.06 : 539,680,766.04 = 212,458,580.64 : x
  2. Step 2: Convert to fraction form
    391,079,307.06/539,680,766.04 = 212,458,580.64/x
  3. Step 3: Cross multiply
    391,079,307.06x = 539,680,766.04 × 212,458,580.64
  4. Step 4: Simplify right side
    391,079,307.06x = 114,659,809,551,566,304
  5. Step 5: Solve for x
    x = 114,659,809,551,566,304/391,079,307.06
  6. Step 6: Final answer
    x = 293,188,127.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.