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Finding the Fourth Proportional to 631,970.48, 872,133 and 377,274.08

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Solution

The fourth proportional to 631,970.48, 872,133 and 377,274.08 is: 520,646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,970.48 : 872,133 = 377,274.08 : x
  2. Step 2: Convert to fraction form
    631,970.48/872,133 = 377,274.08/x
  3. Step 3: Cross multiply
    631,970.48x = 872,133 × 377,274.08
  4. Step 4: Simplify right side
    631,970.48x = 329,033,175,212.64
  5. Step 5: Solve for x
    x = 329,033,175,212.64/631,970.48
  6. Step 6: Final answer
    x = 520,646.43

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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.