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Finding the Fourth Proportional to 561,076.11, 774,289.98 and 319,374.24

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Solution

The fourth proportional to 561,076.11, 774,289.98 and 319,374.24 is: 440,739.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,076.11 : 774,289.98 = 319,374.24 : x
  2. Step 2: Convert to fraction form
    561,076.11/774,289.98 = 319,374.24/x
  3. Step 3: Cross multiply
    561,076.11x = 774,289.98 × 319,374.24
  4. Step 4: Simplify right side
    561,076.11x = 247,288,275,837.84
  5. Step 5: Solve for x
    x = 247,288,275,837.84/561,076.11
  6. Step 6: Final answer
    x = 440,739.27

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1.5x scale

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.