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Finding the Fourth Proportional to 618,509.52, 928,121.04 and 334,200.78

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Solution

The fourth proportional to 618,509.52, 928,121.04 and 334,200.78 is: 501,493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,509.52 : 928,121.04 = 334,200.78 : x
  2. Step 2: Convert to fraction form
    618,509.52/928,121.04 = 334,200.78/x
  3. Step 3: Cross multiply
    618,509.52x = 928,121.04 × 334,200.78
  4. Step 4: Simplify right side
    618,509.52x = 310,178,775,502.41
  5. Step 5: Solve for x
    x = 310,178,775,502.41/618,509.52
  6. Step 6: Final answer
    x = 501,493.94

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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.