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Finding the Fourth Proportional to 431,593.26, 645,655.05 and 373,057.26

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Solution

The fourth proportional to 431,593.26, 645,655.05 and 373,057.26 is: 558,086.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,593.26 : 645,655.05 = 373,057.26 : x
  2. Step 2: Convert to fraction form
    431,593.26/645,655.05 = 373,057.26/x
  3. Step 3: Cross multiply
    431,593.26x = 645,655.05 × 373,057.26
  4. Step 4: Simplify right side
    431,593.26x = 240,866,303,858.16
  5. Step 5: Solve for x
    x = 240,866,303,858.16/431,593.26
  6. Step 6: Final answer
    x = 558,086.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.