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Finding the Fourth Proportional to 620,279.70, 930,419.55 and 265,329.60

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Solution

The fourth proportional to 620,279.70, 930,419.55 and 265,329.60 is: 397,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,279.70 : 930,419.55 = 265,329.60 : x
  2. Step 2: Convert to fraction form
    620,279.70/930,419.55 = 265,329.60/x
  3. Step 3: Cross multiply
    620,279.70x = 930,419.55 × 265,329.60
  4. Step 4: Simplify right side
    620,279.70x = 246,867,847,033.68
  5. Step 5: Solve for x
    x = 246,867,847,033.68/620,279.70
  6. Step 6: Final answer
    x = 397,994.40

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Similar ratio
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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.