Home / 765,878.85-1,056,871.29-421,647.48

Finding the Fourth Proportional to 765,878.85, 1,056,871.29 and 421,647.48

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Solution

The fourth proportional to 765,878.85, 1,056,871.29 and 421,647.48 is: 581,850.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,878.85 : 1,056,871.29 = 421,647.48 : x
  2. Step 2: Convert to fraction form
    765,878.85/1,056,871.29 = 421,647.48/x
  3. Step 3: Cross multiply
    765,878.85x = 1,056,871.29 × 421,647.48
  4. Step 4: Simplify right side
    765,878.85x = 445,627,116,112.85
  5. Step 5: Solve for x
    x = 445,627,116,112.85/765,878.85
  6. Step 6: Final answer
    x = 581,850.66

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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.