Home / 460,387,847.40-690,571,800.36-128,385,998.88

Finding the Fourth Proportional to 460,387,847.40, 690,571,800.36 and 128,385,998.88

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Solution

The fourth proportional to 460,387,847.40, 690,571,800.36 and 128,385,998.88 is: 192,576,217.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,387,847.40 : 690,571,800.36 = 128,385,998.88 : x
  2. Step 2: Convert to fraction form
    460,387,847.40/690,571,800.36 = 128,385,998.88/x
  3. Step 3: Cross multiply
    460,387,847.40x = 690,571,800.36 × 128,385,998.88
  4. Step 4: Simplify right side
    460,387,847.40x = 88,659,750,387,578,544
  5. Step 5: Solve for x
    x = 88,659,750,387,578,544/460,387,847.40
  6. Step 6: Final answer
    x = 192,576,217.83

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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.