Home / 1,238,800,977.40-1,858,201,466.10-687,802,948.60

Finding the Fourth Proportional to 1,238,800,977.40, 1,858,201,466.10 and 687,802,948.60

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Solution

The fourth proportional to 1,238,800,977.40, 1,858,201,466.10 and 687,802,948.60 is: 1,031,704,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,800,977.40 : 1,858,201,466.10 = 687,802,948.60 : x
  2. Step 2: Convert to fraction form
    1,238,800,977.40/1,858,201,466.10 = 687,802,948.60/x
  3. Step 3: Cross multiply
    1,238,800,977.40x = 1,858,201,466.10 × 687,802,948.60
  4. Step 4: Simplify right side
    1,238,800,977.40x = 1,278,076,447,476,422,912
  5. Step 5: Solve for x
    x = 1,278,076,447,476,422,912/1,238,800,977.40
  6. Step 6: Final answer
    x = 1,031,704,422.90

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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.