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Finding the Fourth Proportional to 565,519.44, 780,410.52 and 307,390.80

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Solution

The fourth proportional to 565,519.44, 780,410.52 and 307,390.80 is: 424,195.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,519.44 : 780,410.52 = 307,390.80 : x
  2. Step 2: Convert to fraction form
    565,519.44/780,410.52 = 307,390.80/x
  3. Step 3: Cross multiply
    565,519.44x = 780,410.52 × 307,390.80
  4. Step 4: Simplify right side
    565,519.44x = 239,891,014,071.22
  5. Step 5: Solve for x
    x = 239,891,014,071.22/565,519.44
  6. Step 6: Final answer
    x = 424,195.88

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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.