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Finding the Fourth Proportional to 638,003.81, 880,484.43 and 351,523.82

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Solution

The fourth proportional to 638,003.81, 880,484.43 and 351,523.82 is: 485,124.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,003.81 : 880,484.43 = 351,523.82 : x
  2. Step 2: Convert to fraction form
    638,003.81/880,484.43 = 351,523.82/x
  3. Step 3: Cross multiply
    638,003.81x = 880,484.43 × 351,523.82
  4. Step 4: Simplify right side
    638,003.81x = 309,511,250,284.12
  5. Step 5: Solve for x
    x = 309,511,250,284.12/638,003.81
  6. Step 6: Final answer
    x = 485,124.45

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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.