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Finding the Fourth Proportional to 661,650.50, 992,475.76 and 287,673.50

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Solution

The fourth proportional to 661,650.50, 992,475.76 and 287,673.50 is: 431,510.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,650.50 : 992,475.76 = 287,673.50 : x
  2. Step 2: Convert to fraction form
    661,650.50/992,475.76 = 287,673.50/x
  3. Step 3: Cross multiply
    661,650.50x = 992,475.76 × 287,673.50
  4. Step 4: Simplify right side
    661,650.50x = 285,508,975,544.36
  5. Step 5: Solve for x
    x = 285,508,975,544.36/661,650.50
  6. Step 6: Final answer
    x = 431,510.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.