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Finding the Fourth Proportional to 486,134.40, 729,201.60 and 456,585.60

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Solution

The fourth proportional to 486,134.40, 729,201.60 and 456,585.60 is: 684,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,134.40 : 729,201.60 = 456,585.60 : x
  2. Step 2: Convert to fraction form
    486,134.40/729,201.60 = 456,585.60/x
  3. Step 3: Cross multiply
    486,134.40x = 729,201.60 × 456,585.60
  4. Step 4: Simplify right side
    486,134.40x = 332,942,950,056.96
  5. Step 5: Solve for x
    x = 332,942,950,056.96/486,134.40
  6. Step 6: Final answer
    x = 684,878.40

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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.