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Finding the Fourth Proportional to 638,243.20, 957,364.80 and 524,081.80

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Solution

The fourth proportional to 638,243.20, 957,364.80 and 524,081.80 is: 786,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,243.20 : 957,364.80 = 524,081.80 : x
  2. Step 2: Convert to fraction form
    638,243.20/957,364.80 = 524,081.80/x
  3. Step 3: Cross multiply
    638,243.20x = 957,364.80 × 524,081.80
  4. Step 4: Simplify right side
    638,243.20x = 501,737,467,640.64
  5. Step 5: Solve for x
    x = 501,737,467,640.64/638,243.20
  6. Step 6: Final answer
    x = 786,122.70

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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.