Home / 8,085,679.20-12,128,518.80-5,806,387.80

Finding the Fourth Proportional to 8,085,679.20, 12,128,518.80 and 5,806,387.80

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Solution

The fourth proportional to 8,085,679.20, 12,128,518.80 and 5,806,387.80 is: 8,709,581.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,679.20 : 12,128,518.80 = 5,806,387.80 : x
  2. Step 2: Convert to fraction form
    8,085,679.20/12,128,518.80 = 5,806,387.80/x
  3. Step 3: Cross multiply
    8,085,679.20x = 12,128,518.80 × 5,806,387.80
  4. Step 4: Simplify right side
    8,085,679.20x = 70,422,883,592,390.64
  5. Step 5: Solve for x
    x = 70,422,883,592,390.64/8,085,679.20
  6. Step 6: Final answer
    x = 8,709,581.70

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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.