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Finding the Fourth Proportional to 661,997.80, 992,219.10 and 306,260.38

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Solution

The fourth proportional to 661,997.80, 992,219.10 and 306,260.38 is: 459,030.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,997.80 : 992,219.10 = 306,260.38 : x
  2. Step 2: Convert to fraction form
    661,997.80/992,219.10 = 306,260.38/x
  3. Step 3: Cross multiply
    661,997.80x = 992,219.10 × 306,260.38
  4. Step 4: Simplify right side
    661,997.80x = 303,877,398,609.26
  5. Step 5: Solve for x
    x = 303,877,398,609.26/661,997.80
  6. Step 6: Final answer
    x = 459,030.83

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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.