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Finding the Fourth Proportional to 557,528.23, 769,392.03 and 302,879.98

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Solution

The fourth proportional to 557,528.23, 769,392.03 and 302,879.98 is: 417,976.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,528.23 : 769,392.03 = 302,879.98 : x
  2. Step 2: Convert to fraction form
    557,528.23/769,392.03 = 302,879.98/x
  3. Step 3: Cross multiply
    557,528.23x = 769,392.03 × 302,879.98
  4. Step 4: Simplify right side
    557,528.23x = 233,033,442,658.56
  5. Step 5: Solve for x
    x = 233,033,442,658.56/557,528.23
  6. Step 6: Final answer
    x = 417,976.04

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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.