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Finding the Fourth Proportional to 486,530.40, 728,240.40 and 346,562.40

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Solution

The fourth proportional to 486,530.40, 728,240.40 and 346,562.40 is: 518,735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,530.40 : 728,240.40 = 346,562.40 : x
  2. Step 2: Convert to fraction form
    486,530.40/728,240.40 = 346,562.40/x
  3. Step 3: Cross multiply
    486,530.40x = 728,240.40 × 346,562.40
  4. Step 4: Simplify right side
    486,530.40x = 252,380,740,800.96
  5. Step 5: Solve for x
    x = 252,380,740,800.96/486,530.40
  6. Step 6: Final answer
    x = 518,735.81

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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.