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Finding the Fourth Proportional to 881,271, 1,216,161.27 and 478,863

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Solution

The fourth proportional to 881,271, 1,216,161.27 and 478,863 is: 660,834.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,271 : 1,216,161.27 = 478,863 : x
  2. Step 2: Convert to fraction form
    881,271/1,216,161.27 = 478,863/x
  3. Step 3: Cross multiply
    881,271x = 1,216,161.27 × 478,863
  4. Step 4: Simplify right side
    881,271x = 582,374,634,236.01
  5. Step 5: Solve for x
    x = 582,374,634,236.01/881,271
  6. Step 6: Final answer
    x = 660,834.90

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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.