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Finding the Fourth Proportional to 486,480.40, 728,165.40 and 346,512.40

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Solution

The fourth proportional to 486,480.40, 728,165.40 and 346,512.40 is: 518,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,480.40 : 728,165.40 = 346,512.40 : x
  2. Step 2: Convert to fraction form
    486,480.40/728,165.40 = 346,512.40/x
  3. Step 3: Cross multiply
    486,480.40x = 728,165.40 × 346,512.40
  4. Step 4: Simplify right side
    486,480.40x = 252,318,340,350.96
  5. Step 5: Solve for x
    x = 252,318,340,350.96/486,480.40
  6. Step 6: Final answer
    x = 518,660.86

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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.