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Finding the Fourth Proportional to 554,343.40, 765,159.78 and 353,204.20

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Solution

The fourth proportional to 554,343.40, 765,159.78 and 353,204.20 is: 487,527.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,343.40 : 765,159.78 = 353,204.20 : x
  2. Step 2: Convert to fraction form
    554,343.40/765,159.78 = 353,204.20/x
  3. Step 3: Cross multiply
    554,343.40x = 765,159.78 × 353,204.20
  4. Step 4: Simplify right side
    554,343.40x = 270,257,647,967.08
  5. Step 5: Solve for x
    x = 270,257,647,967.08/554,343.40
  6. Step 6: Final answer
    x = 487,527.49

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1.5x scale

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.