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Finding the Fourth Proportional to 561,520.76, 774,896.93 and 306,871.94

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Solution

The fourth proportional to 561,520.76, 774,896.93 and 306,871.94 is: 423,482.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,520.76 : 774,896.93 = 306,871.94 : x
  2. Step 2: Convert to fraction form
    561,520.76/774,896.93 = 306,871.94/x
  3. Step 3: Cross multiply
    561,520.76x = 774,896.93 × 306,871.94
  4. Step 4: Simplify right side
    561,520.76x = 237,794,125,762.80
  5. Step 5: Solve for x
    x = 237,794,125,762.80/561,520.76
  6. Step 6: Final answer
    x = 423,482.34

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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.