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Finding the Fourth Proportional to 576,728.99, 795,870.49 and 318,600.34

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Solution

The fourth proportional to 576,728.99, 795,870.49 and 318,600.34 is: 439,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,728.99 : 795,870.49 = 318,600.34 : x
  2. Step 2: Convert to fraction form
    576,728.99/795,870.49 = 318,600.34/x
  3. Step 3: Cross multiply
    576,728.99x = 795,870.49 × 318,600.34
  4. Step 4: Simplify right side
    576,728.99x = 253,564,605,625.10
  5. Step 5: Solve for x
    x = 253,564,605,625.10/576,728.99
  6. Step 6: Final answer
    x = 439,659.90

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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.