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Finding the Fourth Proportional to 561,010.27, 774,089.94 and 319,278.46

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Solution

The fourth proportional to 561,010.27, 774,089.94 and 319,278.46 is: 440,544.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,010.27 : 774,089.94 = 319,278.46 : x
  2. Step 2: Convert to fraction form
    561,010.27/774,089.94 = 319,278.46/x
  3. Step 3: Cross multiply
    561,010.27x = 774,089.94 × 319,278.46
  4. Step 4: Simplify right side
    561,010.27x = 247,150,243,760.21
  5. Step 5: Solve for x
    x = 247,150,243,760.21/561,010.27
  6. Step 6: Final answer
    x = 440,544.95

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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.