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Finding the Fourth Proportional to 489,022.90, 731,979.15 and 349,054.90

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Solution

The fourth proportional to 489,022.90, 731,979.15 and 349,054.90 is: 522,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,022.90 : 731,979.15 = 349,054.90 : x
  2. Step 2: Convert to fraction form
    489,022.90/731,979.15 = 349,054.90/x
  3. Step 3: Cross multiply
    489,022.90x = 731,979.15 × 349,054.90
  4. Step 4: Simplify right side
    489,022.90x = 255,500,909,005.34
  5. Step 5: Solve for x
    x = 255,500,909,005.34/489,022.90
  6. Step 6: Final answer
    x = 522,472.28

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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.