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Finding the Fourth Proportional to 486,470.40, 728,150.40 and 346,502.40

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Solution

The fourth proportional to 486,470.40, 728,150.40 and 346,502.40 is: 518,645.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,470.40 : 728,150.40 = 346,502.40 : x
  2. Step 2: Convert to fraction form
    486,470.40/728,150.40 = 346,502.40/x
  3. Step 3: Cross multiply
    486,470.40x = 728,150.40 × 346,502.40
  4. Step 4: Simplify right side
    486,470.40x = 252,305,861,160.96
  5. Step 5: Solve for x
    x = 252,305,861,160.96/486,470.40
  6. Step 6: Final answer
    x = 518,645.86

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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.