Home / 935,354.88-1,290,789.21-505,635.80

Finding the Fourth Proportional to 935,354.88, 1,290,789.21 and 505,635.80

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Solution

The fourth proportional to 935,354.88, 1,290,789.21 and 505,635.80 is: 697,777.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,354.88 : 1,290,789.21 = 505,635.80 : x
  2. Step 2: Convert to fraction form
    935,354.88/1,290,789.21 = 505,635.80/x
  3. Step 3: Cross multiply
    935,354.88x = 1,290,789.21 × 505,635.80
  4. Step 4: Simplify right side
    935,354.88x = 652,669,228,375.77
  5. Step 5: Solve for x
    x = 652,669,228,375.77/935,354.88
  6. Step 6: Final answer
    x = 697,777.11

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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.