Home / 642,641.16-886,844.85-356,179.70

Finding the Fourth Proportional to 642,641.16, 886,844.85 and 356,179.70

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Solution

The fourth proportional to 642,641.16, 886,844.85 and 356,179.70 is: 491,528.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,641.16 : 886,844.85 = 356,179.70 : x
  2. Step 2: Convert to fraction form
    642,641.16/886,844.85 = 356,179.70/x
  3. Step 3: Cross multiply
    642,641.16x = 886,844.85 × 356,179.70
  4. Step 4: Simplify right side
    642,641.16x = 315,876,128,185.32
  5. Step 5: Solve for x
    x = 315,876,128,185.32/642,641.16
  6. Step 6: Final answer
    x = 491,528.01

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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.