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Finding the Fourth Proportional to 631,176.69, 870,991.07 and 359,243.73

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Solution

The fourth proportional to 631,176.69, 870,991.07 and 359,243.73 is: 495,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,176.69 : 870,991.07 = 359,243.73 : x
  2. Step 2: Convert to fraction form
    631,176.69/870,991.07 = 359,243.73/x
  3. Step 3: Cross multiply
    631,176.69x = 870,991.07 × 359,243.73
  4. Step 4: Simplify right side
    631,176.69x = 312,898,080,783.49
  5. Step 5: Solve for x
    x = 312,898,080,783.49/631,176.69
  6. Step 6: Final answer
    x = 495,737.70

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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.