Home / 8,460,010.70-12,690,016.05-2,780,809.10

Finding the Fourth Proportional to 8,460,010.70, 12,690,016.05 and 2,780,809.10

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Solution

The fourth proportional to 8,460,010.70, 12,690,016.05 and 2,780,809.10 is: 4,171,213.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,460,010.70 : 12,690,016.05 = 2,780,809.10 : x
  2. Step 2: Convert to fraction form
    8,460,010.70/12,690,016.05 = 2,780,809.10/x
  3. Step 3: Cross multiply
    8,460,010.70x = 12,690,016.05 × 2,780,809.10
  4. Step 4: Simplify right side
    8,460,010.70x = 35,288,512,110,986.05
  5. Step 5: Solve for x
    x = 35,288,512,110,986.05/8,460,010.70
  6. Step 6: Final answer
    x = 4,171,213.65

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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.