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Finding the Fourth Proportional to 561,041.76, 774,240.48 and 306,392.94

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Solution

The fourth proportional to 561,041.76, 774,240.48 and 306,392.94 is: 422,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,041.76 : 774,240.48 = 306,392.94 : x
  2. Step 2: Convert to fraction form
    561,041.76/774,240.48 = 306,392.94/x
  3. Step 3: Cross multiply
    561,041.76x = 774,240.48 × 306,392.94
  4. Step 4: Simplify right side
    561,041.76x = 237,221,816,934.21
  5. Step 5: Solve for x
    x = 237,221,816,934.21/561,041.76
  6. Step 6: Final answer
    x = 422,823.81

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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.