Home / 890,991.86-1,336,352.47-291,939.76

Finding the Fourth Proportional to 890,991.86, 1,336,352.47 and 291,939.76

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Solution

The fourth proportional to 890,991.86, 1,336,352.47 and 291,939.76 is: 437,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,991.86 : 1,336,352.47 = 291,939.76 : x
  2. Step 2: Convert to fraction form
    890,991.86/1,336,352.47 = 291,939.76/x
  3. Step 3: Cross multiply
    890,991.86x = 1,336,352.47 × 291,939.76
  4. Step 4: Simplify right side
    890,991.86x = 390,134,419,367.21
  5. Step 5: Solve for x
    x = 390,134,419,367.21/890,991.86
  6. Step 6: Final answer
    x = 437,865.30

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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.