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Finding the Fourth Proportional to 561,542.16, 774,928.26 and 306,893.28

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Solution

The fourth proportional to 561,542.16, 774,928.26 and 306,893.28 is: 423,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,542.16 : 774,928.26 = 306,893.28 : x
  2. Step 2: Convert to fraction form
    561,542.16/774,928.26 = 306,893.28/x
  3. Step 3: Cross multiply
    561,542.16x = 774,928.26 × 306,893.28
  4. Step 4: Simplify right side
    561,542.16x = 237,820,275,476.09
  5. Step 5: Solve for x
    x = 237,820,275,476.09/561,542.16
  6. Step 6: Final answer
    x = 423,512.77

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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.