Home / 743,090.85-1,025,465.33-420,863.23

Finding the Fourth Proportional to 743,090.85, 1,025,465.33 and 420,863.23

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Solution

The fourth proportional to 743,090.85, 1,025,465.33 and 420,863.23 is: 580,791.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,090.85 : 1,025,465.33 = 420,863.23 : x
  2. Step 2: Convert to fraction form
    743,090.85/1,025,465.33 = 420,863.23/x
  3. Step 3: Cross multiply
    743,090.85x = 1,025,465.33 × 420,863.23
  4. Step 4: Simplify right side
    743,090.85x = 431,580,651,036.82
  5. Step 5: Solve for x
    x = 431,580,651,036.82/743,090.85
  6. Step 6: Final answer
    x = 580,791.23

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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.