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Finding the Fourth Proportional to 551,576.55, 761,264.22 and 515,556.66

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Solution

The fourth proportional to 551,576.55, 761,264.22 and 515,556.66 is: 711,550.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,576.55 : 761,264.22 = 515,556.66 : x
  2. Step 2: Convert to fraction form
    551,576.55/761,264.22 = 515,556.66/x
  3. Step 3: Cross multiply
    551,576.55x = 761,264.22 × 515,556.66
  4. Step 4: Simplify right side
    551,576.55x = 392,474,838,640.71
  5. Step 5: Solve for x
    x = 392,474,838,640.71/551,576.55
  6. Step 6: Final answer
    x = 711,550.99

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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.