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Finding the Fourth Proportional to 486,325.88, 671,186.64 and 404,509.79

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Solution

The fourth proportional to 486,325.88, 671,186.64 and 404,509.79 is: 558,270.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,325.88 : 671,186.64 = 404,509.79 : x
  2. Step 2: Convert to fraction form
    486,325.88/671,186.64 = 404,509.79/x
  3. Step 3: Cross multiply
    486,325.88x = 671,186.64 × 404,509.79
  4. Step 4: Simplify right side
    486,325.88x = 271,501,566,797.21
  5. Step 5: Solve for x
    x = 271,501,566,797.21/486,325.88
  6. Step 6: Final answer
    x = 558,270.86

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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.