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Finding the Fourth Proportional to 484,203.80, 726,305.70 and 425,106.20

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Solution

The fourth proportional to 484,203.80, 726,305.70 and 425,106.20 is: 637,659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,203.80 : 726,305.70 = 425,106.20 : x
  2. Step 2: Convert to fraction form
    484,203.80/726,305.70 = 425,106.20/x
  3. Step 3: Cross multiply
    484,203.80x = 726,305.70 × 425,106.20
  4. Step 4: Simplify right side
    484,203.80x = 308,757,056,165.34
  5. Step 5: Solve for x
    x = 308,757,056,165.34/484,203.80
  6. Step 6: Final answer
    x = 637,659.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.