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Finding the Fourth Proportional to 554,619.44, 765,373.92 and 312,901.40

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Solution

The fourth proportional to 554,619.44, 765,373.92 and 312,901.40 is: 431,803.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,619.44 : 765,373.92 = 312,901.40 : x
  2. Step 2: Convert to fraction form
    554,619.44/765,373.92 = 312,901.40/x
  3. Step 3: Cross multiply
    554,619.44x = 765,373.92 × 312,901.40
  4. Step 4: Simplify right side
    554,619.44x = 239,486,571,091.49
  5. Step 5: Solve for x
    x = 239,486,571,091.49/554,619.44
  6. Step 6: Final answer
    x = 431,803.42

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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.