Home / 643,946.40-965,876.40-170,621.60

Finding the Fourth Proportional to 643,946.40, 965,876.40 and 170,621.60

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Solution

The fourth proportional to 643,946.40, 965,876.40 and 170,621.60 is: 255,920.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,946.40 : 965,876.40 = 170,621.60 : x
  2. Step 2: Convert to fraction form
    643,946.40/965,876.40 = 170,621.60/x
  3. Step 3: Cross multiply
    643,946.40x = 965,876.40 × 170,621.60
  4. Step 4: Simplify right side
    643,946.40x = 164,799,376,770.24
  5. Step 5: Solve for x
    x = 164,799,376,770.24/643,946.40
  6. Step 6: Final answer
    x = 255,920.95

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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.