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Finding the Fourth Proportional to 557,643.90, 835,542.45 and 320,573.10

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Solution

The fourth proportional to 557,643.90, 835,542.45 and 320,573.10 is: 480,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,643.90 : 835,542.45 = 320,573.10 : x
  2. Step 2: Convert to fraction form
    557,643.90/835,542.45 = 320,573.10/x
  3. Step 3: Cross multiply
    557,643.90x = 835,542.45 × 320,573.10
  4. Step 4: Simplify right side
    557,643.90x = 267,852,433,378.10
  5. Step 5: Solve for x
    x = 267,852,433,378.10/557,643.90
  6. Step 6: Final answer
    x = 480,328.81

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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.