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Finding the Fourth Proportional to 652,881.20, 978,009.60 and 440,304.80

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Solution

The fourth proportional to 652,881.20, 978,009.60 and 440,304.80 is: 659,572.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,881.20 : 978,009.60 = 440,304.80 : x
  2. Step 2: Convert to fraction form
    652,881.20/978,009.60 = 440,304.80/x
  3. Step 3: Cross multiply
    652,881.20x = 978,009.60 × 440,304.80
  4. Step 4: Simplify right side
    652,881.20x = 430,622,321,326.08
  5. Step 5: Solve for x
    x = 430,622,321,326.08/652,881.20
  6. Step 6: Final answer
    x = 659,572.25

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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.