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Finding the Fourth Proportional to 554,819.63, 765,637.92 and 313,095.78

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Solution

The fourth proportional to 554,819.63, 765,637.92 and 313,095.78 is: 432,064.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,819.63 : 765,637.92 = 313,095.78 : x
  2. Step 2: Convert to fraction form
    554,819.63/765,637.92 = 313,095.78/x
  3. Step 3: Cross multiply
    554,819.63x = 765,637.92 × 313,095.78
  4. Step 4: Simplify right side
    554,819.63x = 239,718,001,759.98
  5. Step 5: Solve for x
    x = 239,718,001,759.98/554,819.63
  6. Step 6: Final answer
    x = 432,064.75

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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.