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Finding the Fourth Proportional to 643,710.40, 966,201.20 and 483,228.34

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Solution

The fourth proportional to 643,710.40, 966,201.20 and 483,228.34 is: 725,319.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,710.40 : 966,201.20 = 483,228.34 : x
  2. Step 2: Convert to fraction form
    643,710.40/966,201.20 = 483,228.34/x
  3. Step 3: Cross multiply
    643,710.40x = 966,201.20 × 483,228.34
  4. Step 4: Simplify right side
    643,710.40x = 466,895,801,982.01
  5. Step 5: Solve for x
    x = 466,895,801,982.01/643,710.40
  6. Step 6: Final answer
    x = 725,319.65

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1.5x scale

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.