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Finding the Fourth Proportional to 561,587.94, 774,990 and 306,941.04

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Solution

The fourth proportional to 561,587.94, 774,990 and 306,941.04 is: 423,577.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,587.94 : 774,990 = 306,941.04 : x
  2. Step 2: Convert to fraction form
    561,587.94/774,990 = 306,941.04/x
  3. Step 3: Cross multiply
    561,587.94x = 774,990 × 306,941.04
  4. Step 4: Simplify right side
    561,587.94x = 237,876,236,589.60
  5. Step 5: Solve for x
    x = 237,876,236,589.60/561,587.94
  6. Step 6: Final answer
    x = 423,577.89

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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.