Home / 842,378.11-1,162,347.39-479,809.04

Finding the Fourth Proportional to 842,378.11, 1,162,347.39 and 479,809.04

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Solution

The fourth proportional to 842,378.11, 1,162,347.39 and 479,809.04 is: 662,059.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,378.11 : 1,162,347.39 = 479,809.04 : x
  2. Step 2: Convert to fraction form
    842,378.11/1,162,347.39 = 479,809.04/x
  3. Step 3: Cross multiply
    842,378.11x = 1,162,347.39 × 479,809.04
  4. Step 4: Simplify right side
    842,378.11x = 557,704,785,342.41
  5. Step 5: Solve for x
    x = 557,704,785,342.41/842,378.11
  6. Step 6: Final answer
    x = 662,059.92

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1.5x scale

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.