Home / 769,496.56-1,061,886.71-420,621.46

Finding the Fourth Proportional to 769,496.56, 1,061,886.71 and 420,621.46

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Solution

The fourth proportional to 769,496.56, 1,061,886.71 and 420,621.46 is: 580,447.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,496.56 : 1,061,886.71 = 420,621.46 : x
  2. Step 2: Convert to fraction form
    769,496.56/1,061,886.71 = 420,621.46/x
  3. Step 3: Cross multiply
    769,496.56x = 1,061,886.71 × 420,621.46
  4. Step 4: Simplify right side
    769,496.56x = 446,652,336,711.63
  5. Step 5: Solve for x
    x = 446,652,336,711.63/769,496.56
  6. Step 6: Final answer
    x = 580,447.48

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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.