Home / 765,305.52-1,056,131.22-421,181.07

Finding the Fourth Proportional to 765,305.52, 1,056,131.22 and 421,181.07

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Solution

The fourth proportional to 765,305.52, 1,056,131.22 and 421,181.07 is: 581,235.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,305.52 : 1,056,131.22 = 421,181.07 : x
  2. Step 2: Convert to fraction form
    765,305.52/1,056,131.22 = 421,181.07/x
  3. Step 3: Cross multiply
    765,305.52x = 1,056,131.22 × 421,181.07
  4. Step 4: Simplify right side
    765,305.52x = 444,822,474,918.94
  5. Step 5: Solve for x
    x = 444,822,474,918.94/765,305.52
  6. Step 6: Final answer
    x = 581,235.16

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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.