Home / 1,379,986,911.48-1,904,548,934.70-785,415,963

Finding the Fourth Proportional to 1,379,986,911.48, 1,904,548,934.70 and 785,415,963

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Solution

The fourth proportional to 1,379,986,911.48, 1,904,548,934.70 and 785,415,963 is: 1,083,969,074.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,986,911.48 : 1,904,548,934.70 = 785,415,963 : x
  2. Step 2: Convert to fraction form
    1,379,986,911.48/1,904,548,934.70 = 785,415,963/x
  3. Step 3: Cross multiply
    1,379,986,911.48x = 1,904,548,934.70 × 785,415,963
  4. Step 4: Simplify right side
    1,379,986,911.48x = 1,495,863,135,628,024,576
  5. Step 5: Solve for x
    x = 1,495,863,135,628,024,576/1,379,986,911.48
  6. Step 6: Final answer
    x = 1,083,969,074.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.