Home / 743,015.58-1,025,290.53-420,662.76

Finding the Fourth Proportional to 743,015.58, 1,025,290.53 and 420,662.76

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Solution

The fourth proportional to 743,015.58, 1,025,290.53 and 420,662.76 is: 580,474.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,015.58 : 1,025,290.53 = 420,662.76 : x
  2. Step 2: Convert to fraction form
    743,015.58/1,025,290.53 = 420,662.76/x
  3. Step 3: Cross multiply
    743,015.58x = 1,025,290.53 × 420,662.76
  4. Step 4: Simplify right side
    743,015.58x = 431,301,544,151.66
  5. Step 5: Solve for x
    x = 431,301,544,151.66/743,015.58
  6. Step 6: Final answer
    x = 580,474.43

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Double scale
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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.