Home / 819,986.90-1,230,335.55-440,464.79

Finding the Fourth Proportional to 819,986.90, 1,230,335.55 and 440,464.79

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Solution

The fourth proportional to 819,986.90, 1,230,335.55 and 440,464.79 is: 660,887.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,986.90 : 1,230,335.55 = 440,464.79 : x
  2. Step 2: Convert to fraction form
    819,986.90/1,230,335.55 = 440,464.79/x
  3. Step 3: Cross multiply
    819,986.90x = 1,230,335.55 × 440,464.79
  4. Step 4: Simplify right side
    819,986.90x = 541,919,483,508.61
  5. Step 5: Solve for x
    x = 541,919,483,508.61/819,986.90
  6. Step 6: Final answer
    x = 660,887.98

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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.