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Finding the Fourth Proportional to 807,489.80, 1,208,901.90 and 492,561.80

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Solution

The fourth proportional to 807,489.80, 1,208,901.90 and 492,561.80 is: 737,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,489.80 : 1,208,901.90 = 492,561.80 : x
  2. Step 2: Convert to fraction form
    807,489.80/1,208,901.90 = 492,561.80/x
  3. Step 3: Cross multiply
    807,489.80x = 1,208,901.90 × 492,561.80
  4. Step 4: Simplify right side
    807,489.80x = 595,458,895,887.42
  5. Step 5: Solve for x
    x = 595,458,895,887.42/807,489.80
  6. Step 6: Final answer
    x = 737,419.71

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Double scale
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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.