Home / 585,561,693.22-878,310,209.21-428,156,010.57

Finding the Fourth Proportional to 585,561,693.22, 878,310,209.21 and 428,156,010.57

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Solution

The fourth proportional to 585,561,693.22, 878,310,209.21 and 428,156,010.57 is: 642,210,376.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,561,693.22 : 878,310,209.21 = 428,156,010.57 : x
  2. Step 2: Convert to fraction form
    585,561,693.22/878,310,209.21 = 428,156,010.57/x
  3. Step 3: Cross multiply
    585,561,693.22x = 878,310,209.21 × 428,156,010.57
  4. Step 4: Simplify right side
    585,561,693.22x = 376,053,795,216,870,144
  5. Step 5: Solve for x
    x = 376,053,795,216,870,144/585,561,693.22
  6. Step 6: Final answer
    x = 642,210,376.07

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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.