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Finding the Fourth Proportional to 701,639.28, 968,704.92 and 486,704.16

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Solution

The fourth proportional to 701,639.28, 968,704.92 and 486,704.16 is: 671,958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,639.28 : 968,704.92 = 486,704.16 : x
  2. Step 2: Convert to fraction form
    701,639.28/968,704.92 = 486,704.16/x
  3. Step 3: Cross multiply
    701,639.28x = 968,704.92 × 486,704.16
  4. Step 4: Simplify right side
    701,639.28x = 471,472,714,376.47
  5. Step 5: Solve for x
    x = 471,472,714,376.47/701,639.28
  6. Step 6: Final answer
    x = 671,958.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.