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Finding the Fourth Proportional to 554,696.87, 765,238.59 and 325,137.78

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Solution

The fourth proportional to 554,696.87, 765,238.59 and 325,137.78 is: 448,547.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,696.87 : 765,238.59 = 325,137.78 : x
  2. Step 2: Convert to fraction form
    554,696.87/765,238.59 = 325,137.78/x
  3. Step 3: Cross multiply
    554,696.87x = 765,238.59 × 325,137.78
  4. Step 4: Simplify right side
    554,696.87x = 248,807,976,322.93
  5. Step 5: Solve for x
    x = 248,807,976,322.93/554,696.87
  6. Step 6: Final answer
    x = 448,547.65

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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.