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Finding the Fourth Proportional to 554,994.70, 765,889.80 and 300,345.88

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Solution

The fourth proportional to 554,994.70, 765,889.80 and 300,345.88 is: 414,475.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,994.70 : 765,889.80 = 300,345.88 : x
  2. Step 2: Convert to fraction form
    554,994.70/765,889.80 = 300,345.88/x
  3. Step 3: Cross multiply
    554,994.70x = 765,889.80 × 300,345.88
  4. Step 4: Simplify right side
    554,994.70x = 230,031,845,964.02
  5. Step 5: Solve for x
    x = 230,031,845,964.02/554,994.70
  6. Step 6: Final answer
    x = 414,475.75

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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.