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Finding the Fourth Proportional to 657,103.70, 985,655.55 and 447,151.70

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Solution

The fourth proportional to 657,103.70, 985,655.55 and 447,151.70 is: 670,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,103.70 : 985,655.55 = 447,151.70 : x
  2. Step 2: Convert to fraction form
    657,103.70/985,655.55 = 447,151.70/x
  3. Step 3: Cross multiply
    657,103.70x = 985,655.55 × 447,151.70
  4. Step 4: Simplify right side
    657,103.70x = 440,737,554,796.94
  5. Step 5: Solve for x
    x = 440,737,554,796.94/657,103.70
  6. Step 6: Final answer
    x = 670,727.55

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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.