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Finding the Fourth Proportional to 657,205.80, 985,808.70 and 372,786.45

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Solution

The fourth proportional to 657,205.80, 985,808.70 and 372,786.45 is: 559,179.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,205.80 : 985,808.70 = 372,786.45 : x
  2. Step 2: Convert to fraction form
    657,205.80/985,808.70 = 372,786.45/x
  3. Step 3: Cross multiply
    657,205.80x = 985,808.70 × 372,786.45
  4. Step 4: Simplify right side
    657,205.80x = 367,496,125,652.12
  5. Step 5: Solve for x
    x = 367,496,125,652.12/657,205.80
  6. Step 6: Final answer
    x = 559,179.68

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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.