Home / 5,128,423.60-7,682,137.80-2,605,500.40

Finding the Fourth Proportional to 5,128,423.60, 7,682,137.80 and 2,605,500.40

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Solution

The fourth proportional to 5,128,423.60, 7,682,137.80 and 2,605,500.40 is: 3,902,917.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128,423.60 : 7,682,137.80 = 2,605,500.40 : x
  2. Step 2: Convert to fraction form
    5,128,423.60/7,682,137.80 = 2,605,500.40/x
  3. Step 3: Cross multiply
    5,128,423.60x = 7,682,137.80 × 2,605,500.40
  4. Step 4: Simplify right side
    5,128,423.60x = 20,015,813,110,755.12
  5. Step 5: Solve for x
    x = 20,015,813,110,755.12/5,128,423.60
  6. Step 6: Final answer
    x = 3,902,917.28

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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.