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Finding the Fourth Proportional to 881,047, 1,215,845.94 and 478,639

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Solution

The fourth proportional to 881,047, 1,215,845.94 and 478,639 is: 660,522.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,047 : 1,215,845.94 = 478,639 : x
  2. Step 2: Convert to fraction form
    881,047/1,215,845.94 = 478,639/x
  3. Step 3: Cross multiply
    881,047x = 1,215,845.94 × 478,639
  4. Step 4: Simplify right side
    881,047x = 581,951,284,875.66
  5. Step 5: Solve for x
    x = 581,951,284,875.66/881,047
  6. Step 6: Final answer
    x = 660,522.41

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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.