Home / 678,285.75-936,037.98-423,784.56

Finding the Fourth Proportional to 678,285.75, 936,037.98 and 423,784.56

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Solution

The fourth proportional to 678,285.75, 936,037.98 and 423,784.56 is: 584,824.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,285.75 : 936,037.98 = 423,784.56 : x
  2. Step 2: Convert to fraction form
    678,285.75/936,037.98 = 423,784.56/x
  3. Step 3: Cross multiply
    678,285.75x = 936,037.98 × 423,784.56
  4. Step 4: Simplify right side
    678,285.75x = 396,678,443,497.59
  5. Step 5: Solve for x
    x = 396,678,443,497.59/678,285.75
  6. Step 6: Final answer
    x = 584,824.97

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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.