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Finding the Fourth Proportional to 587,768.80, 879,320.40 and 509,749.60

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Solution

The fourth proportional to 587,768.80, 879,320.40 and 509,749.60 is: 762,601.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,768.80 : 879,320.40 = 509,749.60 : x
  2. Step 2: Convert to fraction form
    587,768.80/879,320.40 = 509,749.60/x
  3. Step 3: Cross multiply
    587,768.80x = 879,320.40 × 509,749.60
  4. Step 4: Simplify right side
    587,768.80x = 448,233,222,171.84
  5. Step 5: Solve for x
    x = 448,233,222,171.84/587,768.80
  6. Step 6: Final answer
    x = 762,601.25

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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.