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Finding the Fourth Proportional to 554,789.25, 765,614.70 and 300,145.91

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Solution

The fourth proportional to 554,789.25, 765,614.70 and 300,145.91 is: 414,204.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,789.25 : 765,614.70 = 300,145.91 : x
  2. Step 2: Convert to fraction form
    554,789.25/765,614.70 = 300,145.91/x
  3. Step 3: Cross multiply
    554,789.25x = 765,614.70 × 300,145.91
  4. Step 4: Simplify right side
    554,789.25x = 229,796,117,012.80
  5. Step 5: Solve for x
    x = 229,796,117,012.80/554,789.25
  6. Step 6: Final answer
    x = 414,204.34

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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.