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Finding the Fourth Proportional to 554,994.43, 765,894.72 and 300,345.64

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Solution

The fourth proportional to 554,994.43, 765,894.72 and 300,345.64 is: 414,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,994.43 : 765,894.72 = 300,345.64 : x
  2. Step 2: Convert to fraction form
    554,994.43/765,894.72 = 300,345.64/x
  3. Step 3: Cross multiply
    554,994.43x = 765,894.72 × 300,345.64
  4. Step 4: Simplify right side
    554,994.43x = 230,033,139,851.02
  5. Step 5: Solve for x
    x = 230,033,139,851.02/554,994.43
  6. Step 6: Final answer
    x = 414,478.29

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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.