Home / 8,420,709,780.80-12,617,459,781.60-5,309,725,025.60

Finding the Fourth Proportional to 8,420,709,780.80, 12,617,459,781.60 and 5,309,725,025.60

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Solution

The fourth proportional to 8,420,709,780.80, 12,617,459,781.60 and 5,309,725,025.60 is: 7,956,008,900.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420,709,780.80 : 12,617,459,781.60 = 5,309,725,025.60 : x
  2. Step 2: Convert to fraction form
    8,420,709,780.80/12,617,459,781.60 = 5,309,725,025.60/x
  3. Step 3: Cross multiply
    8,420,709,780.80x = 12,617,459,781.60 × 5,309,725,025.60
  4. Step 4: Simplify right side
    8,420,709,780.80x = 66,995,241,961,863,036,928
  5. Step 5: Solve for x
    x = 66,995,241,961,863,036,928/8,420,709,780.80
  6. Step 6: Final answer
    x = 7,956,008,900.18

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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.