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Finding the Fourth Proportional to 886,866.40, 1,330,299.60 and 872,869.60

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Solution

The fourth proportional to 886,866.40, 1,330,299.60 and 872,869.60 is: 1,309,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,866.40 : 1,330,299.60 = 872,869.60 : x
  2. Step 2: Convert to fraction form
    886,866.40/1,330,299.60 = 872,869.60/x
  3. Step 3: Cross multiply
    886,866.40x = 1,330,299.60 × 872,869.60
  4. Step 4: Simplify right side
    886,866.40x = 1,161,178,079,732.16
  5. Step 5: Solve for x
    x = 1,161,178,079,732.16/886,866.40
  6. Step 6: Final answer
    x = 1,309,304.40

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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.