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Finding the Fourth Proportional to 631,964.90, 872,121.93 and 377,338.34

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Solution

The fourth proportional to 631,964.90, 872,121.93 and 377,338.34 is: 520,733.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,964.90 : 872,121.93 = 377,338.34 : x
  2. Step 2: Convert to fraction form
    631,964.90/872,121.93 = 377,338.34/x
  3. Step 3: Cross multiply
    631,964.90x = 872,121.93 × 377,338.34
  4. Step 4: Simplify right side
    631,964.90x = 329,085,041,343.80
  5. Step 5: Solve for x
    x = 329,085,041,343.80/631,964.90
  6. Step 6: Final answer
    x = 520,733.10

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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.