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Finding the Fourth Proportional to 486,536.40, 728,249.40 and 346,568.40

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Solution

The fourth proportional to 486,536.40, 728,249.40 and 346,568.40 is: 518,744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,536.40 : 728,249.40 = 346,568.40 : x
  2. Step 2: Convert to fraction form
    486,536.40/728,249.40 = 346,568.40/x
  3. Step 3: Cross multiply
    486,536.40x = 728,249.40 × 346,568.40
  4. Step 4: Simplify right side
    486,536.40x = 252,388,229,358.96
  5. Step 5: Solve for x
    x = 252,388,229,358.96/486,536.40
  6. Step 6: Final answer
    x = 518,744.80

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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.