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Finding the Fourth Proportional to 703,318.62, 970,578.50 and 381,036.90

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Solution

The fourth proportional to 703,318.62, 970,578.50 and 381,036.90 is: 525,830.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,318.62 : 970,578.50 = 381,036.90 : x
  2. Step 2: Convert to fraction form
    703,318.62/970,578.50 = 381,036.90/x
  3. Step 3: Cross multiply
    703,318.62x = 970,578.50 × 381,036.90
  4. Step 4: Simplify right side
    703,318.62x = 369,826,222,846.65
  5. Step 5: Solve for x
    x = 369,826,222,846.65/703,318.62
  6. Step 6: Final answer
    x = 525,830.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.