Home / 1,187,239,685.64-1,780,025,076.18-522,938,435.64

Finding the Fourth Proportional to 1,187,239,685.64, 1,780,025,076.18 and 522,938,435.64

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Solution

The fourth proportional to 1,187,239,685.64, 1,780,025,076.18 and 522,938,435.64 is: 784,040,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,239,685.64 : 1,780,025,076.18 = 522,938,435.64 : x
  2. Step 2: Convert to fraction form
    1,187,239,685.64/1,780,025,076.18 = 522,938,435.64/x
  3. Step 3: Cross multiply
    1,187,239,685.64x = 1,780,025,076.18 × 522,938,435.64
  4. Step 4: Simplify right side
    1,187,239,685.64x = 930,843,528,737,540,992
  5. Step 5: Solve for x
    x = 930,843,528,737,540,992/1,187,239,685.64
  6. Step 6: Final answer
    x = 784,040,105.80

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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.