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Finding the Fourth Proportional to 648,133.70, 894,423.80 and 361,653.81

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Solution

The fourth proportional to 648,133.70, 894,423.80 and 361,653.81 is: 499,081.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,133.70 : 894,423.80 = 361,653.81 : x
  2. Step 2: Convert to fraction form
    648,133.70/894,423.80 = 361,653.81/x
  3. Step 3: Cross multiply
    648,133.70x = 894,423.80 × 361,653.81
  4. Step 4: Simplify right side
    648,133.70x = 323,471,770,552.56
  5. Step 5: Solve for x
    x = 323,471,770,552.56/648,133.70
  6. Step 6: Final answer
    x = 499,081.86

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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.