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Finding the Fourth Proportional to 621,404.19, 857,529.66 and 349,472.01

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Solution

The fourth proportional to 621,404.19, 857,529.66 and 349,472.01 is: 482,266.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,404.19 : 857,529.66 = 349,472.01 : x
  2. Step 2: Convert to fraction form
    621,404.19/857,529.66 = 349,472.01/x
  3. Step 3: Cross multiply
    621,404.19x = 857,529.66 × 349,472.01
  4. Step 4: Simplify right side
    621,404.19x = 299,682,613,914.82
  5. Step 5: Solve for x
    x = 299,682,613,914.82/621,404.19
  6. Step 6: Final answer
    x = 482,266.81

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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.