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Finding the Fourth Proportional to 561,427.54, 774,786.06 and 313,075.24

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Solution

The fourth proportional to 561,427.54, 774,786.06 and 313,075.24 is: 432,052.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,427.54 : 774,786.06 = 313,075.24 : x
  2. Step 2: Convert to fraction form
    561,427.54/774,786.06 = 313,075.24/x
  3. Step 3: Cross multiply
    561,427.54x = 774,786.06 × 313,075.24
  4. Step 4: Simplify right side
    561,427.54x = 242,566,330,835.73
  5. Step 5: Solve for x
    x = 242,566,330,835.73/561,427.54
  6. Step 6: Final answer
    x = 432,052.78

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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.