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Finding the Fourth Proportional to 683,934.95, 943,879.08 and 378,004.74

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Solution

The fourth proportional to 683,934.95, 943,879.08 and 378,004.74 is: 521,673.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,934.95 : 943,879.08 = 378,004.74 : x
  2. Step 2: Convert to fraction form
    683,934.95/943,879.08 = 378,004.74/x
  3. Step 3: Cross multiply
    683,934.95x = 943,879.08 × 378,004.74
  4. Step 4: Simplify right side
    683,934.95x = 356,790,766,226.84
  5. Step 5: Solve for x
    x = 356,790,766,226.84/683,934.95
  6. Step 6: Final answer
    x = 521,673.54

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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.