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Finding the Fourth Proportional to 557,477.22, 769,470.53 and 328,108.10

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Solution

The fourth proportional to 557,477.22, 769,470.53 and 328,108.10 is: 452,878.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,477.22 : 769,470.53 = 328,108.10 : x
  2. Step 2: Convert to fraction form
    557,477.22/769,470.53 = 328,108.10/x
  3. Step 3: Cross multiply
    557,477.22x = 769,470.53 × 328,108.10
  4. Step 4: Simplify right side
    557,477.22x = 252,469,513,604.29
  5. Step 5: Solve for x
    x = 252,469,513,604.29/557,477.22
  6. Step 6: Final answer
    x = 452,878.62

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1.5x scale

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.