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Finding the Fourth Proportional to 554,087, 764,640.24 and 315,623

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Solution

The fourth proportional to 554,087, 764,640.24 and 315,623 is: 435,559.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,087 : 764,640.24 = 315,623 : x
  2. Step 2: Convert to fraction form
    554,087/764,640.24 = 315,623/x
  3. Step 3: Cross multiply
    554,087x = 764,640.24 × 315,623
  4. Step 4: Simplify right side
    554,087x = 241,338,046,469.52
  5. Step 5: Solve for x
    x = 241,338,046,469.52/554,087
  6. Step 6: Final answer
    x = 435,559.84

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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.