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Finding the Fourth Proportional to 638,093.16, 880,571.52 and 351,607.32

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Solution

The fourth proportional to 638,093.16, 880,571.52 and 351,607.32 is: 485,219.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,093.16 : 880,571.52 = 351,607.32 : x
  2. Step 2: Convert to fraction form
    638,093.16/880,571.52 = 351,607.32/x
  3. Step 3: Cross multiply
    638,093.16x = 880,571.52 × 351,607.32
  4. Step 4: Simplify right side
    638,093.16x = 309,615,392,215.53
  5. Step 5: Solve for x
    x = 309,615,392,215.53/638,093.16
  6. Step 6: Final answer
    x = 485,219.73

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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.