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Finding the Fourth Proportional to 611,665.40, 844,098.24 and 343,393.40

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Solution

The fourth proportional to 611,665.40, 844,098.24 and 343,393.40 is: 473,882.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,665.40 : 844,098.24 = 343,393.40 : x
  2. Step 2: Convert to fraction form
    611,665.40/844,098.24 = 343,393.40/x
  3. Step 3: Cross multiply
    611,665.40x = 844,098.24 × 343,393.40
  4. Step 4: Simplify right side
    611,665.40x = 289,857,764,567.62
  5. Step 5: Solve for x
    x = 289,857,764,567.62/611,665.40
  6. Step 6: Final answer
    x = 473,882.89

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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.