Home / 772,240.70-1,065,699.24-428,080.34

Finding the Fourth Proportional to 772,240.70, 1,065,699.24 and 428,080.34

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Solution

The fourth proportional to 772,240.70, 1,065,699.24 and 428,080.34 is: 590,754.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,240.70 : 1,065,699.24 = 428,080.34 : x
  2. Step 2: Convert to fraction form
    772,240.70/1,065,699.24 = 428,080.34/x
  3. Step 3: Cross multiply
    772,240.70x = 1,065,699.24 × 428,080.34
  4. Step 4: Simplify right side
    772,240.70x = 456,204,892,996.94
  5. Step 5: Solve for x
    x = 456,204,892,996.94/772,240.70
  6. Step 6: Final answer
    x = 590,754.79

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1.5x scale

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.