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Finding the Fourth Proportional to 561,435.06, 774,782.34 and 306,786.24

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Solution

The fourth proportional to 561,435.06, 774,782.34 and 306,786.24 is: 423,366.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,435.06 : 774,782.34 = 306,786.24 : x
  2. Step 2: Convert to fraction form
    561,435.06/774,782.34 = 306,786.24/x
  3. Step 3: Cross multiply
    561,435.06x = 774,782.34 × 306,786.24
  4. Step 4: Simplify right side
    561,435.06x = 237,692,560,907.00
  5. Step 5: Solve for x
    x = 237,692,560,907.00/561,435.06
  6. Step 6: Final answer
    x = 423,366.08

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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.