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Finding the Fourth Proportional to 978,331.80, 1,467,497.70 and 891,240.60

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Solution

The fourth proportional to 978,331.80, 1,467,497.70 and 891,240.60 is: 1,336,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,331.80 : 1,467,497.70 = 891,240.60 : x
  2. Step 2: Convert to fraction form
    978,331.80/1,467,497.70 = 891,240.60/x
  3. Step 3: Cross multiply
    978,331.80x = 1,467,497.70 × 891,240.60
  4. Step 4: Simplify right side
    978,331.80x = 1,307,893,530,646.62
  5. Step 5: Solve for x
    x = 1,307,893,530,646.62/978,331.80
  6. Step 6: Final answer
    x = 1,336,860.90

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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.