Home / 842,407.71-1,162,522.40-479,865.15

Finding the Fourth Proportional to 842,407.71, 1,162,522.40 and 479,865.15

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Solution

The fourth proportional to 842,407.71, 1,162,522.40 and 479,865.15 is: 662,213.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,407.71 : 1,162,522.40 = 479,865.15 : x
  2. Step 2: Convert to fraction form
    842,407.71/1,162,522.40 = 479,865.15/x
  3. Step 3: Cross multiply
    842,407.71x = 1,162,522.40 × 479,865.15
  4. Step 4: Simplify right side
    842,407.71x = 557,853,983,455.03
  5. Step 5: Solve for x
    x = 557,853,983,455.03/842,407.71
  6. Step 6: Final answer
    x = 662,213.77

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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.