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Finding the Fourth Proportional to 661,536.18, 913,179.56 and 468,950.51

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Solution

The fourth proportional to 661,536.18, 913,179.56 and 468,950.51 is: 647,335.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,536.18 : 913,179.56 = 468,950.51 : x
  2. Step 2: Convert to fraction form
    661,536.18/913,179.56 = 468,950.51/x
  3. Step 3: Cross multiply
    661,536.18x = 913,179.56 × 468,950.51
  4. Step 4: Simplify right side
    661,536.18x = 428,236,020,321.77
  5. Step 5: Solve for x
    x = 428,236,020,321.77/661,536.18
  6. Step 6: Final answer
    x = 647,335.75

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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.