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Finding the Fourth Proportional to 489,260.80, 733,891.20 and 355,859.20

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Solution

The fourth proportional to 489,260.80, 733,891.20 and 355,859.20 is: 533,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,260.80 : 733,891.20 = 355,859.20 : x
  2. Step 2: Convert to fraction form
    489,260.80/733,891.20 = 355,859.20/x
  3. Step 3: Cross multiply
    489,260.80x = 733,891.20 × 355,859.20
  4. Step 4: Simplify right side
    489,260.80x = 261,161,935,319.04
  5. Step 5: Solve for x
    x = 261,161,935,319.04/489,260.80
  6. Step 6: Final answer
    x = 533,788.80

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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.