Home / 6,985,665.14-9,640,201.65-3,929,878.58

Finding the Fourth Proportional to 6,985,665.14, 9,640,201.65 and 3,929,878.58

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Solution

The fourth proportional to 6,985,665.14, 9,640,201.65 and 3,929,878.58 is: 5,423,223.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985,665.14 : 9,640,201.65 = 3,929,878.58 : x
  2. Step 2: Convert to fraction form
    6,985,665.14/9,640,201.65 = 3,929,878.58/x
  3. Step 3: Cross multiply
    6,985,665.14x = 9,640,201.65 × 3,929,878.58
  4. Step 4: Simplify right side
    6,985,665.14x = 37,884,821,971,215.66
  5. Step 5: Solve for x
    x = 37,884,821,971,215.66/6,985,665.14
  6. Step 6: Final answer
    x = 5,423,223.30

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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.