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Finding the Fourth Proportional to 631,958.40, 872,112.96 and 377,331.84

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Solution

The fourth proportional to 631,958.40, 872,112.96 and 377,331.84 is: 520,724.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,958.40 : 872,112.96 = 377,331.84 : x
  2. Step 2: Convert to fraction form
    631,958.40/872,112.96 = 377,331.84/x
  3. Step 3: Cross multiply
    631,958.40x = 872,112.96 × 377,331.84
  4. Step 4: Simplify right side
    631,958.40x = 329,075,987,884.65
  5. Step 5: Solve for x
    x = 329,075,987,884.65/631,958.40
  6. Step 6: Final answer
    x = 520,724.13

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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.