Home / 765,269.12-1,056,080.94-421,144.64

Finding the Fourth Proportional to 765,269.12, 1,056,080.94 and 421,144.64

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Solution

The fourth proportional to 765,269.12, 1,056,080.94 and 421,144.64 is: 581,184.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,269.12 : 1,056,080.94 = 421,144.64 : x
  2. Step 2: Convert to fraction form
    765,269.12/1,056,080.94 = 421,144.64/x
  3. Step 3: Cross multiply
    765,269.12x = 1,056,080.94 × 421,144.64
  4. Step 4: Simplify right side
    765,269.12x = 444,762,827,287.16
  5. Step 5: Solve for x
    x = 444,762,827,287.16/765,269.12
  6. Step 6: Final answer
    x = 581,184.86

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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.