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Finding the Fourth Proportional to 554,555.28, 765,288.60 and 299,906.48

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Solution

The fourth proportional to 554,555.28, 765,288.60 and 299,906.48 is: 413,872.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,555.28 : 765,288.60 = 299,906.48 : x
  2. Step 2: Convert to fraction form
    554,555.28/765,288.60 = 299,906.48/x
  3. Step 3: Cross multiply
    554,555.28x = 765,288.60 × 299,906.48
  4. Step 4: Simplify right side
    554,555.28x = 229,515,010,210.13
  5. Step 5: Solve for x
    x = 229,515,010,210.13/554,555.28
  6. Step 6: Final answer
    x = 413,872.19

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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.