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Finding the Fourth Proportional to 640,632.56, 884,075.74 and 350,250.26

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Solution

The fourth proportional to 640,632.56, 884,075.74 and 350,250.26 is: 483,346.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,632.56 : 884,075.74 = 350,250.26 : x
  2. Step 2: Convert to fraction form
    640,632.56/884,075.74 = 350,250.26/x
  3. Step 3: Cross multiply
    640,632.56x = 884,075.74 × 350,250.26
  4. Step 4: Simplify right side
    640,632.56x = 309,647,757,794.69
  5. Step 5: Solve for x
    x = 309,647,757,794.69/640,632.56
  6. Step 6: Final answer
    x = 483,346.89

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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.