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Finding the Fourth Proportional to 618,885.90, 854,064.36 and 343,263.42

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Solution

The fourth proportional to 618,885.90, 854,064.36 and 343,263.42 is: 473,704.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,885.90 : 854,064.36 = 343,263.42 : x
  2. Step 2: Convert to fraction form
    618,885.90/854,064.36 = 343,263.42/x
  3. Step 3: Cross multiply
    618,885.90x = 854,064.36 × 343,263.42
  4. Step 4: Simplify right side
    618,885.90x = 293,169,053,113.71
  5. Step 5: Solve for x
    x = 293,169,053,113.71/618,885.90
  6. Step 6: Final answer
    x = 473,704.53

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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.