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Finding the Fourth Proportional to 750,003.24, 1,034,978.67 and 427,817.64

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Solution

The fourth proportional to 750,003.24, 1,034,978.67 and 427,817.64 is: 590,373.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,003.24 : 1,034,978.67 = 427,817.64 : x
  2. Step 2: Convert to fraction form
    750,003.24/1,034,978.67 = 427,817.64/x
  3. Step 3: Cross multiply
    750,003.24x = 1,034,978.67 × 427,817.64
  4. Step 4: Simplify right side
    750,003.24x = 442,782,132,049.74
  5. Step 5: Solve for x
    x = 442,782,132,049.74/750,003.24
  6. Step 6: Final answer
    x = 590,373.63

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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.