Home / 646,643.20-969,734.40-225,932.80

Finding the Fourth Proportional to 646,643.20, 969,734.40 and 225,932.80

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Solution

The fourth proportional to 646,643.20, 969,734.40 and 225,932.80 is: 338,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,643.20 : 969,734.40 = 225,932.80 : x
  2. Step 2: Convert to fraction form
    646,643.20/969,734.40 = 225,932.80/x
  3. Step 3: Cross multiply
    646,643.20x = 969,734.40 × 225,932.80
  4. Step 4: Simplify right side
    646,643.20x = 219,094,808,248.32
  5. Step 5: Solve for x
    x = 219,094,808,248.32/646,643.20
  6. Step 6: Final answer
    x = 338,818.70

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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.