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Finding the Fourth Proportional to 809,807.82, 1,117,543.22 and 447,240.89

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Solution

The fourth proportional to 809,807.82, 1,117,543.22 and 447,240.89 is: 617,197.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,807.82 : 1,117,543.22 = 447,240.89 : x
  2. Step 2: Convert to fraction form
    809,807.82/1,117,543.22 = 447,240.89/x
  3. Step 3: Cross multiply
    809,807.82x = 1,117,543.22 × 447,240.89
  4. Step 4: Simplify right side
    809,807.82x = 499,811,016,502.35
  5. Step 5: Solve for x
    x = 499,811,016,502.35/809,807.82
  6. Step 6: Final answer
    x = 617,197.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.