Home / 689,715.16-951,806.82-383,811.22

Finding the Fourth Proportional to 689,715.16, 951,806.82 and 383,811.22

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Solution

The fourth proportional to 689,715.16, 951,806.82 and 383,811.22 is: 529,659.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,715.16 : 951,806.82 = 383,811.22 : x
  2. Step 2: Convert to fraction form
    689,715.16/951,806.82 = 383,811.22/x
  3. Step 3: Cross multiply
    689,715.16x = 951,806.82 × 383,811.22
  4. Step 4: Simplify right side
    689,715.16x = 365,314,136,788.52
  5. Step 5: Solve for x
    x = 365,314,136,788.52/689,715.16
  6. Step 6: Final answer
    x = 529,659.43

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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.