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Finding the Fourth Proportional to 561,567.77, 774,963.54 and 306,918.96

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Solution

The fourth proportional to 561,567.77, 774,963.54 and 306,918.96 is: 423,548.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,567.77 : 774,963.54 = 306,918.96 : x
  2. Step 2: Convert to fraction form
    561,567.77/774,963.54 = 306,918.96/x
  3. Step 3: Cross multiply
    561,567.77x = 774,963.54 × 306,918.96
  4. Step 4: Simplify right side
    561,567.77x = 237,851,003,734.72
  5. Step 5: Solve for x
    x = 237,851,003,734.72/561,567.77
  6. Step 6: Final answer
    x = 423,548.18

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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.