Home / 921,238.73-1,381,987.09-322,063.60

Finding the Fourth Proportional to 921,238.73, 1,381,987.09 and 322,063.60

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Solution

The fourth proportional to 921,238.73, 1,381,987.09 and 322,063.60 is: 483,140.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,238.73 : 1,381,987.09 = 322,063.60 : x
  2. Step 2: Convert to fraction form
    921,238.73/1,381,987.09 = 322,063.60/x
  3. Step 3: Cross multiply
    921,238.73x = 1,381,987.09 × 322,063.60
  4. Step 4: Simplify right side
    921,238.73x = 445,087,735,748.61
  5. Step 5: Solve for x
    x = 445,087,735,748.61/921,238.73
  6. Step 6: Final answer
    x = 483,140.50

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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.