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Finding the Fourth Proportional to 619,215.48, 854,434.71 and 343,568.93

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Solution

The fourth proportional to 619,215.48, 854,434.71 and 343,568.93 is: 474,079.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,215.48 : 854,434.71 = 343,568.93 : x
  2. Step 2: Convert to fraction form
    619,215.48/854,434.71 = 343,568.93/x
  3. Step 3: Cross multiply
    619,215.48x = 854,434.71 × 343,568.93
  4. Step 4: Simplify right side
    619,215.48x = 293,557,214,797.39
  5. Step 5: Solve for x
    x = 293,557,214,797.39/619,215.48
  6. Step 6: Final answer
    x = 474,079.26

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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.