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Finding the Fourth Proportional to 874,362.44, 1,206,681.96 and 487,203.56

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Solution

The fourth proportional to 874,362.44, 1,206,681.96 and 487,203.56 is: 672,375.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,362.44 : 1,206,681.96 = 487,203.56 : x
  2. Step 2: Convert to fraction form
    874,362.44/1,206,681.96 = 487,203.56/x
  3. Step 3: Cross multiply
    874,362.44x = 1,206,681.96 × 487,203.56
  4. Step 4: Simplify right side
    874,362.44x = 587,899,746,699.78
  5. Step 5: Solve for x
    x = 587,899,746,699.78/874,362.44
  6. Step 6: Final answer
    x = 672,375.34

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Double scale
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1.5x scale

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.