Home / 743,142.06-1,025,560.26-420,845.22

Finding the Fourth Proportional to 743,142.06, 1,025,560.26 and 420,845.22

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Solution

The fourth proportional to 743,142.06, 1,025,560.26 and 420,845.22 is: 580,780.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,142.06 : 1,025,560.26 = 420,845.22 : x
  2. Step 2: Convert to fraction form
    743,142.06/1,025,560.26 = 420,845.22/x
  3. Step 3: Cross multiply
    743,142.06x = 1,025,560.26 × 420,845.22
  4. Step 4: Simplify right side
    743,142.06x = 431,602,133,242.96
  5. Step 5: Solve for x
    x = 431,602,133,242.96/743,142.06
  6. Step 6: Final answer
    x = 580,780.12

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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.