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Finding the Fourth Proportional to 554,451.30, 765,131.13 and 328,169.70

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Solution

The fourth proportional to 554,451.30, 765,131.13 and 328,169.70 is: 452,867.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,451.30 : 765,131.13 = 328,169.70 : x
  2. Step 2: Convert to fraction form
    554,451.30/765,131.13 = 328,169.70/x
  3. Step 3: Cross multiply
    554,451.30x = 765,131.13 × 328,169.70
  4. Step 4: Simplify right side
    554,451.30x = 251,092,853,392.76
  5. Step 5: Solve for x
    x = 251,092,853,392.76/554,451.30
  6. Step 6: Final answer
    x = 452,867.28

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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.