Home / 650,290.08-897,097.20-420,921.24

Finding the Fourth Proportional to 650,290.08, 897,097.20 and 420,921.24

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Solution

The fourth proportional to 650,290.08, 897,097.20 and 420,921.24 is: 580,675.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,290.08 : 897,097.20 = 420,921.24 : x
  2. Step 2: Convert to fraction form
    650,290.08/897,097.20 = 420,921.24/x
  3. Step 3: Cross multiply
    650,290.08x = 897,097.20 × 420,921.24
  4. Step 4: Simplify right side
    650,290.08x = 377,607,265,824.53
  5. Step 5: Solve for x
    x = 377,607,265,824.53/650,290.08
  6. Step 6: Final answer
    x = 580,675.11

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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.