Home / 765,242.64-1,056,029.88-421,099.56

Finding the Fourth Proportional to 765,242.64, 1,056,029.88 and 421,099.56

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Solution

The fourth proportional to 765,242.64, 1,056,029.88 and 421,099.56 is: 581,114.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,242.64 : 1,056,029.88 = 421,099.56 : x
  2. Step 2: Convert to fraction form
    765,242.64/1,056,029.88 = 421,099.56/x
  3. Step 3: Cross multiply
    765,242.64x = 1,056,029.88 × 421,099.56
  4. Step 4: Simplify right side
    765,242.64x = 444,693,717,814.85
  5. Step 5: Solve for x
    x = 444,693,717,814.85/765,242.64
  6. Step 6: Final answer
    x = 581,114.66

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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.