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Finding the Fourth Proportional to 638,006.70, 957,010.05 and 322,422.60

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Solution

The fourth proportional to 638,006.70, 957,010.05 and 322,422.60 is: 483,633.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,006.70 : 957,010.05 = 322,422.60 : x
  2. Step 2: Convert to fraction form
    638,006.70/957,010.05 = 322,422.60/x
  3. Step 3: Cross multiply
    638,006.70x = 957,010.05 × 322,422.60
  4. Step 4: Simplify right side
    638,006.70x = 308,561,668,547.13
  5. Step 5: Solve for x
    x = 308,561,668,547.13/638,006.70
  6. Step 6: Final answer
    x = 483,633.90

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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.