Home / 743,065.03-1,025,429.66-420,775.04

Finding the Fourth Proportional to 743,065.03, 1,025,429.66 and 420,775.04

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Solution

The fourth proportional to 743,065.03, 1,025,429.66 and 420,775.04 is: 580,669.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,065.03 : 1,025,429.66 = 420,775.04 : x
  2. Step 2: Convert to fraction form
    743,065.03/1,025,429.66 = 420,775.04/x
  3. Step 3: Cross multiply
    743,065.03x = 1,025,429.66 × 420,775.04
  4. Step 4: Simplify right side
    743,065.03x = 431,475,206,203.69
  5. Step 5: Solve for x
    x = 431,475,206,203.69/743,065.03
  6. Step 6: Final answer
    x = 580,669.51

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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.