Home / 431,062,620.67-646,152,212.29-327,211,981.92

Finding the Fourth Proportional to 431,062,620.67, 646,152,212.29 and 327,211,981.92

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Solution

The fourth proportional to 431,062,620.67, 646,152,212.29 and 327,211,981.92 is: 490,482,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,062,620.67 : 646,152,212.29 = 327,211,981.92 : x
  2. Step 2: Convert to fraction form
    431,062,620.67/646,152,212.29 = 327,211,981.92/x
  3. Step 3: Cross multiply
    431,062,620.67x = 646,152,212.29 × 327,211,981.92
  4. Step 4: Simplify right side
    431,062,620.67x = 211,428,746,005,403,488
  5. Step 5: Solve for x
    x = 211,428,746,005,403,488/431,062,620.67
  6. Step 6: Final answer
    x = 490,482,672.05

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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.