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Finding the Fourth Proportional to 810,424.86, 1,118,382.03 and 447,873.90

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Solution

The fourth proportional to 810,424.86, 1,118,382.03 and 447,873.90 is: 618,063.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,424.86 : 1,118,382.03 = 447,873.90 : x
  2. Step 2: Convert to fraction form
    810,424.86/1,118,382.03 = 447,873.90/x
  3. Step 3: Cross multiply
    810,424.86x = 1,118,382.03 × 447,873.90
  4. Step 4: Simplify right side
    810,424.86x = 500,894,121,466.02
  5. Step 5: Solve for x
    x = 500,894,121,466.02/810,424.86
  6. Step 6: Final answer
    x = 618,063.62

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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.