Home / 486,799.20-729,848.64-220,422.60

Finding the Fourth Proportional to 486,799.20, 729,848.64 and 220,422.60

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Solution

The fourth proportional to 486,799.20, 729,848.64 and 220,422.60 is: 330,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,799.20 : 729,848.64 = 220,422.60 : x
  2. Step 2: Convert to fraction form
    486,799.20/729,848.64 = 220,422.60/x
  3. Step 3: Cross multiply
    486,799.20x = 729,848.64 × 220,422.60
  4. Step 4: Simplify right side
    486,799.20x = 160,875,134,835.26
  5. Step 5: Solve for x
    x = 160,875,134,835.26/486,799.20
  6. Step 6: Final answer
    x = 330,475.35

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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.