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Finding the Fourth Proportional to 1,244,962.40, 1,867,443.60 and 867,048.80

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Solution

The fourth proportional to 1,244,962.40, 1,867,443.60 and 867,048.80 is: 1,300,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244,962.40 : 1,867,443.60 = 867,048.80 : x
  2. Step 2: Convert to fraction form
    1,244,962.40/1,867,443.60 = 867,048.80/x
  3. Step 3: Cross multiply
    1,244,962.40x = 1,867,443.60 × 867,048.80
  4. Step 4: Simplify right side
    1,244,962.40x = 1,619,164,732,447.68
  5. Step 5: Solve for x
    x = 1,619,164,732,447.68/1,244,962.40
  6. Step 6: Final answer
    x = 1,300,573.20

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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.