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Finding the Fourth Proportional to 631,175.69, 870,989.69 and 359,242.73

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Solution

The fourth proportional to 631,175.69, 870,989.69 and 359,242.73 is: 495,736.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,175.69 : 870,989.69 = 359,242.73 : x
  2. Step 2: Convert to fraction form
    631,175.69/870,989.69 = 359,242.73/x
  3. Step 3: Cross multiply
    631,175.69x = 870,989.69 × 359,242.73
  4. Step 4: Simplify right side
    631,175.69x = 312,896,713,846.82
  5. Step 5: Solve for x
    x = 312,896,713,846.82/631,175.69
  6. Step 6: Final answer
    x = 495,736.32

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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.