Home / 638,977.32-881,789.62-352,496.84

Finding the Fourth Proportional to 638,977.32, 881,789.62 and 352,496.84

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Solution

The fourth proportional to 638,977.32, 881,789.62 and 352,496.84 is: 486,446.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,977.32 : 881,789.62 = 352,496.84 : x
  2. Step 2: Convert to fraction form
    638,977.32/881,789.62 = 352,496.84/x
  3. Step 3: Cross multiply
    638,977.32x = 881,789.62 × 352,496.84
  4. Step 4: Simplify right side
    638,977.32x = 310,828,054,594.80
  5. Step 5: Solve for x
    x = 310,828,054,594.80/638,977.32
  6. Step 6: Final answer
    x = 486,446.15

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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.