Home / 862,388.98-1,190,238.51-480,538.78

Finding the Fourth Proportional to 862,388.98, 1,190,238.51 and 480,538.78

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Solution

The fourth proportional to 862,388.98, 1,190,238.51 and 480,538.78 is: 663,222.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,388.98 : 1,190,238.51 = 480,538.78 : x
  2. Step 2: Convert to fraction form
    862,388.98/1,190,238.51 = 480,538.78/x
  3. Step 3: Cross multiply
    862,388.98x = 1,190,238.51 × 480,538.78
  4. Step 4: Simplify right side
    862,388.98x = 571,955,761,504.42
  5. Step 5: Solve for x
    x = 571,955,761,504.42/862,388.98
  6. Step 6: Final answer
    x = 663,222.48

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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.