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Finding the Fourth Proportional to 551,917.80, 761,780.70 and 337,238.64

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Solution

The fourth proportional to 551,917.80, 761,780.70 and 337,238.64 is: 465,471.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,917.80 : 761,780.70 = 337,238.64 : x
  2. Step 2: Convert to fraction form
    551,917.80/761,780.70 = 337,238.64/x
  3. Step 3: Cross multiply
    551,917.80x = 761,780.70 × 337,238.64
  4. Step 4: Simplify right side
    551,917.80x = 256,901,887,246.25
  5. Step 5: Solve for x
    x = 256,901,887,246.25/551,917.80
  6. Step 6: Final answer
    x = 465,471.28

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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.