Home / 819,886.68-1,229,977.62-393,060.78

Finding the Fourth Proportional to 819,886.68, 1,229,977.62 and 393,060.78

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Solution

The fourth proportional to 819,886.68, 1,229,977.62 and 393,060.78 is: 589,661.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,886.68 : 1,229,977.62 = 393,060.78 : x
  2. Step 2: Convert to fraction form
    819,886.68/1,229,977.62 = 393,060.78/x
  3. Step 3: Cross multiply
    819,886.68x = 1,229,977.62 × 393,060.78
  4. Step 4: Simplify right side
    819,886.68x = 483,455,962,699.74
  5. Step 5: Solve for x
    x = 483,455,962,699.74/819,886.68
  6. Step 6: Final answer
    x = 589,661.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.