Home / 645,799.21-968,776.58-213,531.37

Finding the Fourth Proportional to 645,799.21, 968,776.58 and 213,531.37

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Solution

The fourth proportional to 645,799.21, 968,776.58 and 213,531.37 is: 320,322.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,799.21 : 968,776.58 = 213,531.37 : x
  2. Step 2: Convert to fraction form
    645,799.21/968,776.58 = 213,531.37/x
  3. Step 3: Cross multiply
    645,799.21x = 968,776.58 × 213,531.37
  4. Step 4: Simplify right side
    645,799.21x = 206,864,190,351.32
  5. Step 5: Solve for x
    x = 206,864,190,351.32/645,799.21
  6. Step 6: Final answer
    x = 320,322.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.