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Finding the Fourth Proportional to 1,703,424, 2,555,568 and 638,469.12

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Solution

The fourth proportional to 1,703,424, 2,555,568 and 638,469.12 is: 957,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,703,424 : 2,555,568 = 638,469.12 : x
  2. Step 2: Convert to fraction form
    1,703,424/2,555,568 = 638,469.12/x
  3. Step 3: Cross multiply
    1,703,424x = 2,555,568 × 638,469.12
  4. Step 4: Simplify right side
    1,703,424x = 1,631,651,252,060.16
  5. Step 5: Solve for x
    x = 1,631,651,252,060.16/1,703,424
  6. Step 6: Final answer
    x = 957,865.60

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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.