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Finding the Fourth Proportional to 536,766.48, 740,007.90 and 405,369.90

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Solution

The fourth proportional to 536,766.48, 740,007.90 and 405,369.90 is: 558,859.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,766.48 : 740,007.90 = 405,369.90 : x
  2. Step 2: Convert to fraction form
    536,766.48/740,007.90 = 405,369.90/x
  3. Step 3: Cross multiply
    536,766.48x = 740,007.90 × 405,369.90
  4. Step 4: Simplify right side
    536,766.48x = 299,976,928,422.21
  5. Step 5: Solve for x
    x = 299,976,928,422.21/536,766.48
  6. Step 6: Final answer
    x = 558,859.28

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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.