Home / 1,221,711.20-1,833,441.60-512,248.40

Finding the Fourth Proportional to 1,221,711.20, 1,833,441.60 and 512,248.40

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Solution

The fourth proportional to 1,221,711.20, 1,833,441.60 and 512,248.40 is: 768,739.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,711.20 : 1,833,441.60 = 512,248.40 : x
  2. Step 2: Convert to fraction form
    1,221,711.20/1,833,441.60 = 512,248.40/x
  3. Step 3: Cross multiply
    1,221,711.20x = 1,833,441.60 × 512,248.40
  4. Step 4: Simplify right side
    1,221,711.20x = 939,177,526,093.44
  5. Step 5: Solve for x
    x = 939,177,526,093.44/1,221,711.20
  6. Step 6: Final answer
    x = 768,739.39

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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.