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Finding the Fourth Proportional to 617,533.56, 852,719.40 and 388,164.69

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Solution

The fourth proportional to 617,533.56, 852,719.40 and 388,164.69 is: 535,996.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,533.56 : 852,719.40 = 388,164.69 : x
  2. Step 2: Convert to fraction form
    617,533.56/852,719.40 = 388,164.69/x
  3. Step 3: Cross multiply
    617,533.56x = 852,719.40 × 388,164.69
  4. Step 4: Simplify right side
    617,533.56x = 330,995,561,557.99
  5. Step 5: Solve for x
    x = 330,995,561,557.99/617,533.56
  6. Step 6: Final answer
    x = 535,996.07

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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.