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Finding the Fourth Proportional to 667,587.04, 921,265.02 and 361,661.23

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Solution

The fourth proportional to 667,587.04, 921,265.02 and 361,661.23 is: 499,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,587.04 : 921,265.02 = 361,661.23 : x
  2. Step 2: Convert to fraction form
    667,587.04/921,265.02 = 361,661.23/x
  3. Step 3: Cross multiply
    667,587.04x = 921,265.02 × 361,661.23
  4. Step 4: Simplify right side
    667,587.04x = 333,185,837,945.55
  5. Step 5: Solve for x
    x = 333,185,837,945.55/667,587.04
  6. Step 6: Final answer
    x = 499,089.74

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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.