Home / 638,083.18-880,573.32-351,621.76

Finding the Fourth Proportional to 638,083.18, 880,573.32 and 351,621.76

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Solution

The fourth proportional to 638,083.18, 880,573.32 and 351,621.76 is: 485,248.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,083.18 : 880,573.32 = 351,621.76 : x
  2. Step 2: Convert to fraction form
    638,083.18/880,573.32 = 351,621.76/x
  3. Step 3: Cross multiply
    638,083.18x = 880,573.32 × 351,621.76
  4. Step 4: Simplify right side
    638,083.18x = 309,628,740,587.44
  5. Step 5: Solve for x
    x = 309,628,740,587.44/638,083.18
  6. Step 6: Final answer
    x = 485,248.24

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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.