Home / 790,737.75-1,091,218.68-428,161.86

Finding the Fourth Proportional to 790,737.75, 1,091,218.68 and 428,161.86

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Solution

The fourth proportional to 790,737.75, 1,091,218.68 and 428,161.86 is: 590,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,737.75 : 1,091,218.68 = 428,161.86 : x
  2. Step 2: Convert to fraction form
    790,737.75/1,091,218.68 = 428,161.86/x
  3. Step 3: Cross multiply
    790,737.75x = 1,091,218.68 × 428,161.86
  4. Step 4: Simplify right side
    790,737.75x = 467,218,219,695.55
  5. Step 5: Solve for x
    x = 467,218,219,695.55/790,737.75
  6. Step 6: Final answer
    x = 590,863.68

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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.