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Finding the Fourth Proportional to 551,170.44, 760,556.52 and 309,479.40

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Solution

The fourth proportional to 551,170.44, 760,556.52 and 309,479.40 is: 427,048.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,170.44 : 760,556.52 = 309,479.40 : x
  2. Step 2: Convert to fraction form
    551,170.44/760,556.52 = 309,479.40/x
  3. Step 3: Cross multiply
    551,170.44x = 760,556.52 × 309,479.40
  4. Step 4: Simplify right side
    551,170.44x = 235,376,575,475.69
  5. Step 5: Solve for x
    x = 235,376,575,475.69/551,170.44
  6. Step 6: Final answer
    x = 427,048.62

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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.