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Finding the Fourth Proportional to 657,457.90, 986,186.85 and 303,163.90

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Solution

The fourth proportional to 657,457.90, 986,186.85 and 303,163.90 is: 454,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,457.90 : 986,186.85 = 303,163.90 : x
  2. Step 2: Convert to fraction form
    657,457.90/986,186.85 = 303,163.90/x
  3. Step 3: Cross multiply
    657,457.90x = 986,186.85 × 303,163.90
  4. Step 4: Simplify right side
    657,457.90x = 298,976,251,574.72
  5. Step 5: Solve for x
    x = 298,976,251,574.72/657,457.90
  6. Step 6: Final answer
    x = 454,745.85

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Double scale
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Similar ratio
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1.5x scale

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.