Home / 642,131.43-886,108.86-351,739.14

Finding the Fourth Proportional to 642,131.43, 886,108.86 and 351,739.14

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Solution

The fourth proportional to 642,131.43, 886,108.86 and 351,739.14 is: 485,382.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,131.43 : 886,108.86 = 351,739.14 : x
  2. Step 2: Convert to fraction form
    642,131.43/886,108.86 = 351,739.14/x
  3. Step 3: Cross multiply
    642,131.43x = 886,108.86 × 351,739.14
  4. Step 4: Simplify right side
    642,131.43x = 311,679,168,362.78
  5. Step 5: Solve for x
    x = 311,679,168,362.78/642,131.43
  6. Step 6: Final answer
    x = 485,382.20

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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.