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Finding the Fourth Proportional to 878,886, 1,318,466.52 and 279,981.36

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Solution

The fourth proportional to 878,886, 1,318,466.52 and 279,981.36 is: 420,015.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,886 : 1,318,466.52 = 279,981.36 : x
  2. Step 2: Convert to fraction form
    878,886/1,318,466.52 = 279,981.36/x
  3. Step 3: Cross multiply
    878,886x = 1,318,466.52 × 279,981.36
  4. Step 4: Simplify right side
    878,886x = 369,146,049,384.07
  5. Step 5: Solve for x
    x = 369,146,049,384.07/878,886
  6. Step 6: Final answer
    x = 420,015.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.