Home / 689,784.49-951,895.72-383,855.64

Finding the Fourth Proportional to 689,784.49, 951,895.72 and 383,855.64

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Solution

The fourth proportional to 689,784.49, 951,895.72 and 383,855.64 is: 529,716.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,784.49 : 951,895.72 = 383,855.64 : x
  2. Step 2: Convert to fraction form
    689,784.49/951,895.72 = 383,855.64/x
  3. Step 3: Cross multiply
    689,784.49x = 951,895.72 × 383,855.64
  4. Step 4: Simplify right side
    689,784.49x = 365,390,535,564.88
  5. Step 5: Solve for x
    x = 365,390,535,564.88/689,784.49
  6. Step 6: Final answer
    x = 529,716.95

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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.