Home / 285,523,724.54-428,282,118.14-78,261,960.69

Finding the Fourth Proportional to 285,523,724.54, 428,282,118.14 and 78,261,960.69

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Solution

The fourth proportional to 285,523,724.54, 428,282,118.14 and 78,261,960.69 is: 117,391,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,523,724.54 : 428,282,118.14 = 78,261,960.69 : x
  2. Step 2: Convert to fraction form
    285,523,724.54/428,282,118.14 = 78,261,960.69/x
  3. Step 3: Cross multiply
    285,523,724.54x = 428,282,118.14 × 78,261,960.69
  4. Step 4: Simplify right side
    285,523,724.54x = 33,518,198,293,711,304
  5. Step 5: Solve for x
    x = 33,518,198,293,711,304/285,523,724.54
  6. Step 6: Final answer
    x = 117,391,990.27

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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.