Home / 728,977.92-1,005,966.72-427,372.80

Finding the Fourth Proportional to 728,977.92, 1,005,966.72 and 427,372.80

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Solution

The fourth proportional to 728,977.92, 1,005,966.72 and 427,372.80 is: 589,761.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,977.92 : 1,005,966.72 = 427,372.80 : x
  2. Step 2: Convert to fraction form
    728,977.92/1,005,966.72 = 427,372.80/x
  3. Step 3: Cross multiply
    728,977.92x = 1,005,966.72 × 427,372.80
  4. Step 4: Simplify right side
    728,977.92x = 429,922,813,833.22
  5. Step 5: Solve for x
    x = 429,922,813,833.22/728,977.92
  6. Step 6: Final answer
    x = 589,761.09

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1.5x scale

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.