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Finding the Fourth Proportional to 612,244.76, 845,064.42 and 397,372.28

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Solution

The fourth proportional to 612,244.76, 845,064.42 and 397,372.28 is: 548,481.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,244.76 : 845,064.42 = 397,372.28 : x
  2. Step 2: Convert to fraction form
    612,244.76/845,064.42 = 397,372.28/x
  3. Step 3: Cross multiply
    612,244.76x = 845,064.42 × 397,372.28
  4. Step 4: Simplify right side
    612,244.76x = 335,805,175,322.28
  5. Step 5: Solve for x
    x = 335,805,175,322.28/612,244.76
  6. Step 6: Final answer
    x = 548,481.91

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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.