Home / 980,889.48-1,353,787.92-817,286.40

Finding the Fourth Proportional to 980,889.48, 1,353,787.92 and 817,286.40

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Solution

The fourth proportional to 980,889.48, 1,353,787.92 and 817,286.40 is: 1,127,988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,889.48 : 1,353,787.92 = 817,286.40 : x
  2. Step 2: Convert to fraction form
    980,889.48/1,353,787.92 = 817,286.40/x
  3. Step 3: Cross multiply
    980,889.48x = 1,353,787.92 × 817,286.40
  4. Step 4: Simplify right side
    980,889.48x = 1,106,432,455,500.29
  5. Step 5: Solve for x
    x = 1,106,432,455,500.29/980,889.48
  6. Step 6: Final answer
    x = 1,127,988.91

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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.