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Finding the Fourth Proportional to 978,246.30, 1,467,369.45 and 866,053.20

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Solution

The fourth proportional to 978,246.30, 1,467,369.45 and 866,053.20 is: 1,299,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,246.30 : 1,467,369.45 = 866,053.20 : x
  2. Step 2: Convert to fraction form
    978,246.30/1,467,369.45 = 866,053.20/x
  3. Step 3: Cross multiply
    978,246.30x = 1,467,369.45 × 866,053.20
  4. Step 4: Simplify right side
    978,246.30x = 1,270,820,007,754.74
  5. Step 5: Solve for x
    x = 1,270,820,007,754.74/978,246.30
  6. Step 6: Final answer
    x = 1,299,079.80

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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.