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Finding the Fourth Proportional to 708,604.48, 978,147.20 and 519,122.88

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Solution

The fourth proportional to 708,604.48, 978,147.20 and 519,122.88 is: 716,589.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,604.48 : 978,147.20 = 519,122.88 : x
  2. Step 2: Convert to fraction form
    708,604.48/978,147.20 = 519,122.88/x
  3. Step 3: Cross multiply
    708,604.48x = 978,147.20 × 519,122.88
  4. Step 4: Simplify right side
    708,604.48x = 507,778,591,527.94
  5. Step 5: Solve for x
    x = 507,778,591,527.94/708,604.48
  6. Step 6: Final answer
    x = 716,589.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.