Home / 908,906.80-1,363,360.20-310,543.60

Finding the Fourth Proportional to 908,906.80, 1,363,360.20 and 310,543.60

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Solution

The fourth proportional to 908,906.80, 1,363,360.20 and 310,543.60 is: 465,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,906.80 : 1,363,360.20 = 310,543.60 : x
  2. Step 2: Convert to fraction form
    908,906.80/1,363,360.20 = 310,543.60/x
  3. Step 3: Cross multiply
    908,906.80x = 1,363,360.20 × 310,543.60
  4. Step 4: Simplify right side
    908,906.80x = 423,382,784,604.72
  5. Step 5: Solve for x
    x = 423,382,784,604.72/908,906.80
  6. Step 6: Final answer
    x = 465,815.40

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Double scale
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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.