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Finding the Fourth Proportional to 483,789.60, 667,374.48 and 287,444.16

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Solution

The fourth proportional to 483,789.60, 667,374.48 and 287,444.16 is: 396,521.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,789.60 : 667,374.48 = 287,444.16 : x
  2. Step 2: Convert to fraction form
    483,789.60/667,374.48 = 287,444.16/x
  3. Step 3: Cross multiply
    483,789.60x = 667,374.48 × 287,444.16
  4. Step 4: Simplify right side
    483,789.60x = 191,832,896,809.04
  5. Step 5: Solve for x
    x = 191,832,896,809.04/483,789.60
  6. Step 6: Final answer
    x = 396,521.33

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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.