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Finding the Fourth Proportional to 653,985.72, 980,968.86 and 180,660.60

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Solution

The fourth proportional to 653,985.72, 980,968.86 and 180,660.60 is: 270,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,985.72 : 980,968.86 = 180,660.60 : x
  2. Step 2: Convert to fraction form
    653,985.72/980,968.86 = 180,660.60/x
  3. Step 3: Cross multiply
    653,985.72x = 980,968.86 × 180,660.60
  4. Step 4: Simplify right side
    653,985.72x = 177,222,422,828.92
  5. Step 5: Solve for x
    x = 177,222,422,828.92/653,985.72
  6. Step 6: Final answer
    x = 270,988.21

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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.