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Finding the Fourth Proportional to 486,468.40, 728,147.40 and 346,500.40

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Solution

The fourth proportional to 486,468.40, 728,147.40 and 346,500.40 is: 518,642.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,468.40 : 728,147.40 = 346,500.40 : x
  2. Step 2: Convert to fraction form
    486,468.40/728,147.40 = 346,500.40/x
  3. Step 3: Cross multiply
    486,468.40x = 728,147.40 × 346,500.40
  4. Step 4: Simplify right side
    486,468.40x = 252,303,365,358.96
  5. Step 5: Solve for x
    x = 252,303,365,358.96/486,468.40
  6. Step 6: Final answer
    x = 518,642.87

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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.