Home / 781,915,020.66-1,171,285,293.87-608,679,426.42

Finding the Fourth Proportional to 781,915,020.66, 1,171,285,293.87 and 608,679,426.42

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Solution

The fourth proportional to 781,915,020.66, 1,171,285,293.87 and 608,679,426.42 is: 911,783,559.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,915,020.66 : 1,171,285,293.87 = 608,679,426.42 : x
  2. Step 2: Convert to fraction form
    781,915,020.66/1,171,285,293.87 = 608,679,426.42/x
  3. Step 3: Cross multiply
    781,915,020.66x = 1,171,285,293.87 × 608,679,426.42
  4. Step 4: Simplify right side
    781,915,020.66x = 712,937,260,846,972,672
  5. Step 5: Solve for x
    x = 712,937,260,846,972,672/781,915,020.66
  6. Step 6: Final answer
    x = 911,783,559.61

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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.