Home / 728,928.13-1,006,120.87-423,103.04

Finding the Fourth Proportional to 728,928.13, 1,006,120.87 and 423,103.04

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Solution

The fourth proportional to 728,928.13, 1,006,120.87 and 423,103.04 is: 583,998.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,928.13 : 1,006,120.87 = 423,103.04 : x
  2. Step 2: Convert to fraction form
    728,928.13/1,006,120.87 = 423,103.04/x
  3. Step 3: Cross multiply
    728,928.13x = 1,006,120.87 × 423,103.04
  4. Step 4: Simplify right side
    728,928.13x = 425,692,800,161.99
  5. Step 5: Solve for x
    x = 425,692,800,161.99/728,928.13
  6. Step 6: Final answer
    x = 583,998.32

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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.