Home / 671,686.40-1,007,394.88-329,987.20

Finding the Fourth Proportional to 671,686.40, 1,007,394.88 and 329,987.20

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Solution

The fourth proportional to 671,686.40, 1,007,394.88 and 329,987.20 is: 494,914.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,686.40 : 1,007,394.88 = 329,987.20 : x
  2. Step 2: Convert to fraction form
    671,686.40/1,007,394.88 = 329,987.20/x
  3. Step 3: Cross multiply
    671,686.40x = 1,007,394.88 × 329,987.20
  4. Step 4: Simplify right side
    671,686.40x = 332,427,415,745.54
  5. Step 5: Solve for x
    x = 332,427,415,745.54/671,686.40
  6. Step 6: Final answer
    x = 494,914.61

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Double scale
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Similar ratio
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1.5x scale

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.