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Finding the Fourth Proportional to 450,969.28, 620,919.84 and 382,851.52

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Solution

The fourth proportional to 450,969.28, 620,919.84 and 382,851.52 is: 527,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,969.28 : 620,919.84 = 382,851.52 : x
  2. Step 2: Convert to fraction form
    450,969.28/620,919.84 = 382,851.52/x
  3. Step 3: Cross multiply
    450,969.28x = 620,919.84 × 382,851.52
  4. Step 4: Simplify right side
    450,969.28x = 237,720,104,542.16
  5. Step 5: Solve for x
    x = 237,720,104,542.16/450,969.28
  6. Step 6: Final answer
    x = 527,131.48

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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.