Home / 790,628.58-1,091,065.89-428,052.39

Finding the Fourth Proportional to 790,628.58, 1,091,065.89 and 428,052.39

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Solution

The fourth proportional to 790,628.58, 1,091,065.89 and 428,052.39 is: 590,711.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,628.58 : 1,091,065.89 = 428,052.39 : x
  2. Step 2: Convert to fraction form
    790,628.58/1,091,065.89 = 428,052.39/x
  3. Step 3: Cross multiply
    790,628.58x = 1,091,065.89 × 428,052.39
  4. Step 4: Simplify right side
    790,628.58x = 467,033,361,861.98
  5. Step 5: Solve for x
    x = 467,033,361,861.98/790,628.58
  6. Step 6: Final answer
    x = 590,711.46

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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.