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Finding the Fourth Proportional to 554,664.13, 765,370.64 and 312,932.59

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Solution

The fourth proportional to 554,664.13, 765,370.64 and 312,932.59 is: 431,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,664.13 : 765,370.64 = 312,932.59 : x
  2. Step 2: Convert to fraction form
    554,664.13/765,370.64 = 312,932.59/x
  3. Step 3: Cross multiply
    554,664.13x = 765,370.64 × 312,932.59
  4. Step 4: Simplify right side
    554,664.13x = 239,509,415,120.50
  5. Step 5: Solve for x
    x = 239,509,415,120.50/554,664.13
  6. Step 6: Final answer
    x = 431,809.81

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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.