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Finding the Fourth Proportional to 863,648.40, 1,191,781.03 and 476,468.81

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Solution

The fourth proportional to 863,648.40, 1,191,781.03 and 476,468.81 is: 657,497.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,648.40 : 1,191,781.03 = 476,468.81 : x
  2. Step 2: Convert to fraction form
    863,648.40/1,191,781.03 = 476,468.81/x
  3. Step 3: Cross multiply
    863,648.40x = 1,191,781.03 × 476,468.81
  4. Step 4: Simplify right side
    863,648.40x = 567,846,489,144.67
  5. Step 5: Solve for x
    x = 567,846,489,144.67/863,648.40
  6. Step 6: Final answer
    x = 657,497.30

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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.