Home / 681,005.22-939,778.38-375,075.78

Finding the Fourth Proportional to 681,005.22, 939,778.38 and 375,075.78

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Solution

The fourth proportional to 681,005.22, 939,778.38 and 375,075.78 is: 517,599.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,005.22 : 939,778.38 = 375,075.78 : x
  2. Step 2: Convert to fraction form
    681,005.22/939,778.38 = 375,075.78/x
  3. Step 3: Cross multiply
    681,005.22x = 939,778.38 × 375,075.78
  4. Step 4: Simplify right side
    681,005.22x = 352,488,108,905.64
  5. Step 5: Solve for x
    x = 352,488,108,905.64/681,005.22
  6. Step 6: Final answer
    x = 517,599.72

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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.