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Finding the Fourth Proportional to 528,028.80, 792,043.20 and 440,937.60

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Solution

The fourth proportional to 528,028.80, 792,043.20 and 440,937.60 is: 661,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,028.80 : 792,043.20 = 440,937.60 : x
  2. Step 2: Convert to fraction form
    528,028.80/792,043.20 = 440,937.60/x
  3. Step 3: Cross multiply
    528,028.80x = 792,043.20 × 440,937.60
  4. Step 4: Simplify right side
    528,028.80x = 349,241,627,704.32
  5. Step 5: Solve for x
    x = 349,241,627,704.32/528,028.80
  6. Step 6: Final answer
    x = 661,406.40

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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.