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Finding the Fourth Proportional to 551,367.90, 760,977.84 and 379,141.65

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Solution

The fourth proportional to 551,367.90, 760,977.84 and 379,141.65 is: 523,277.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,367.90 : 760,977.84 = 379,141.65 : x
  2. Step 2: Convert to fraction form
    551,367.90/760,977.84 = 379,141.65/x
  3. Step 3: Cross multiply
    551,367.90x = 760,977.84 × 379,141.65
  4. Step 4: Simplify right side
    551,367.90x = 288,518,393,871.04
  5. Step 5: Solve for x
    x = 288,518,393,871.04/551,367.90
  6. Step 6: Final answer
    x = 523,277.46

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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.