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Finding the Fourth Proportional to 550,120.72, 759,415.29 and 346,470.91

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Solution

The fourth proportional to 550,120.72, 759,415.29 and 346,470.91 is: 478,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,120.72 : 759,415.29 = 346,470.91 : x
  2. Step 2: Convert to fraction form
    550,120.72/759,415.29 = 346,470.91/x
  3. Step 3: Cross multiply
    550,120.72x = 759,415.29 × 346,470.91
  4. Step 4: Simplify right side
    550,120.72x = 263,115,306,594.21
  5. Step 5: Solve for x
    x = 263,115,306,594.21/550,120.72
  6. Step 6: Final answer
    x = 478,286.49

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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.