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Finding the Fourth Proportional to 618,964.49, 854,128.23 and 343,296.33

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Solution

The fourth proportional to 618,964.49, 854,128.23 and 343,296.33 is: 473,725.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,964.49 : 854,128.23 = 343,296.33 : x
  2. Step 2: Convert to fraction form
    618,964.49/854,128.23 = 343,296.33/x
  3. Step 3: Cross multiply
    618,964.49x = 854,128.23 × 343,296.33
  4. Step 4: Simplify right side
    618,964.49x = 293,219,088,953.57
  5. Step 5: Solve for x
    x = 293,219,088,953.57/618,964.49
  6. Step 6: Final answer
    x = 473,725.22

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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.