Home / 642,024.32-885,958.22-351,579.50

Finding the Fourth Proportional to 642,024.32, 885,958.22 and 351,579.50

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Solution

The fourth proportional to 642,024.32, 885,958.22 and 351,579.50 is: 485,160.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,024.32 : 885,958.22 = 351,579.50 : x
  2. Step 2: Convert to fraction form
    642,024.32/885,958.22 = 351,579.50/x
  3. Step 3: Cross multiply
    642,024.32x = 885,958.22 × 351,579.50
  4. Step 4: Simplify right side
    642,024.32x = 311,484,741,820.80
  5. Step 5: Solve for x
    x = 311,484,741,820.80/642,024.32
  6. Step 6: Final answer
    x = 485,160.35

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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.