Home / 565,772.03-780,765.63-311,123.21

Finding the Fourth Proportional to 565,772.03, 780,765.63 and 311,123.21

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Solution

The fourth proportional to 565,772.03, 780,765.63 and 311,123.21 is: 429,350.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,772.03 : 780,765.63 = 311,123.21 : x
  2. Step 2: Convert to fraction form
    565,772.03/780,765.63 = 311,123.21/x
  3. Step 3: Cross multiply
    565,772.03x = 780,765.63 × 311,123.21
  4. Step 4: Simplify right side
    565,772.03x = 242,914,305,159.44
  5. Step 5: Solve for x
    x = 242,914,305,159.44/565,772.03
  6. Step 6: Final answer
    x = 429,350.15

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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.