Home / 980,191.20-1,470,286.80-315,410.40

Finding the Fourth Proportional to 980,191.20, 1,470,286.80 and 315,410.40

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Solution

The fourth proportional to 980,191.20, 1,470,286.80 and 315,410.40 is: 473,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,191.20 : 1,470,286.80 = 315,410.40 : x
  2. Step 2: Convert to fraction form
    980,191.20/1,470,286.80 = 315,410.40/x
  3. Step 3: Cross multiply
    980,191.20x = 1,470,286.80 × 315,410.40
  4. Step 4: Simplify right side
    980,191.20x = 463,743,747,702.72
  5. Step 5: Solve for x
    x = 463,743,747,702.72/980,191.20
  6. Step 6: Final answer
    x = 473,115.60

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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.