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Finding the Fourth Proportional to 978,245.80, 1,467,368.70 and 866,052.70

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Solution

The fourth proportional to 978,245.80, 1,467,368.70 and 866,052.70 is: 1,299,079.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,245.80 : 1,467,368.70 = 866,052.70 : x
  2. Step 2: Convert to fraction form
    978,245.80/1,467,368.70 = 866,052.70/x
  3. Step 3: Cross multiply
    978,245.80x = 1,467,368.70 × 866,052.70
  4. Step 4: Simplify right side
    978,245.80x = 1,270,818,624,530.49
  5. Step 5: Solve for x
    x = 1,270,818,624,530.49/978,245.80
  6. Step 6: Final answer
    x = 1,299,079.05

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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.