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Finding the Fourth Proportional to 618,775, 928,019.94 and 349,021.24

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Solution

The fourth proportional to 618,775, 928,019.94 and 349,021.24 is: 523,451.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,775 : 928,019.94 = 349,021.24 : x
  2. Step 2: Convert to fraction form
    618,775/928,019.94 = 349,021.24/x
  3. Step 3: Cross multiply
    618,775x = 928,019.94 × 349,021.24
  4. Step 4: Simplify right side
    618,775x = 323,898,670,203.53
  5. Step 5: Solve for x
    x = 323,898,670,203.53/618,775
  6. Step 6: Final answer
    x = 523,451.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.