Home / 819,104.40-1,227,840.12-391,852.08

Finding the Fourth Proportional to 819,104.40, 1,227,840.12 and 391,852.08

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Solution

The fourth proportional to 819,104.40, 1,227,840.12 and 391,852.08 is: 587,387.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,104.40 : 1,227,840.12 = 391,852.08 : x
  2. Step 2: Convert to fraction form
    819,104.40/1,227,840.12 = 391,852.08/x
  3. Step 3: Cross multiply
    819,104.40x = 1,227,840.12 × 391,852.08
  4. Step 4: Simplify right side
    819,104.40x = 481,131,704,929.45
  5. Step 5: Solve for x
    x = 481,131,704,929.45/819,104.40
  6. Step 6: Final answer
    x = 587,387.52

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1.5x scale

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.