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Finding the Fourth Proportional to 611,439.25, 843,786.17 and 343,167.25

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Solution

The fourth proportional to 611,439.25, 843,786.17 and 343,167.25 is: 473,570.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,439.25 : 843,786.17 = 343,167.25 : x
  2. Step 2: Convert to fraction form
    611,439.25/843,786.17 = 343,167.25/x
  3. Step 3: Cross multiply
    611,439.25x = 843,786.17 × 343,167.25
  4. Step 4: Simplify right side
    611,439.25x = 289,559,777,831.10
  5. Step 5: Solve for x
    x = 289,559,777,831.10/611,439.25
  6. Step 6: Final answer
    x = 473,570.81

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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.