Home / 431,062,619.67-646,152,210.79-327,211,980.92

Finding the Fourth Proportional to 431,062,619.67, 646,152,210.79 and 327,211,980.92

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Solution

The fourth proportional to 431,062,619.67, 646,152,210.79 and 327,211,980.92 is: 490,482,670.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,062,619.67 : 646,152,210.79 = 327,211,980.92 : x
  2. Step 2: Convert to fraction form
    431,062,619.67/646,152,210.79 = 327,211,980.92/x
  3. Step 3: Cross multiply
    431,062,619.67x = 646,152,210.79 × 327,211,980.92
  4. Step 4: Simplify right side
    431,062,619.67x = 211,428,744,866,807,488
  5. Step 5: Solve for x
    x = 211,428,744,866,807,488/431,062,619.67
  6. Step 6: Final answer
    x = 490,482,670.54

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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.