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Finding the Fourth Proportional to 384,879.94, 574,501.52 and 339,429.70

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Solution

The fourth proportional to 384,879.94, 574,501.52 and 339,429.70 is: 506,658.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,879.94 : 574,501.52 = 339,429.70 : x
  2. Step 2: Convert to fraction form
    384,879.94/574,501.52 = 339,429.70/x
  3. Step 3: Cross multiply
    384,879.94x = 574,501.52 × 339,429.70
  4. Step 4: Simplify right side
    384,879.94x = 195,002,878,583.14
  5. Step 5: Solve for x
    x = 195,002,878,583.14/384,879.94
  6. Step 6: Final answer
    x = 506,658.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.