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Finding the Fourth Proportional to 869,623.30, 1,214,984.30 and 869,623.30

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Solution

The fourth proportional to 869,623.30, 1,214,984.30 and 869,623.30 is: 1,214,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,623.30 : 1,214,984.30 = 869,623.30 : x
  2. Step 2: Convert to fraction form
    869,623.30/1,214,984.30 = 869,623.30/x
  3. Step 3: Cross multiply
    869,623.30x = 1,214,984.30 × 869,623.30
  4. Step 4: Simplify right side
    869,623.30x = 1,056,578,656,414.19
  5. Step 5: Solve for x
    x = 1,056,578,656,414.19/869,623.30
  6. Step 6: Final answer
    x = 1,214,984.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.