Home / 679,827.54-938,279.43-393,505.50

Finding the Fourth Proportional to 679,827.54, 938,279.43 and 393,505.50

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Solution

The fourth proportional to 679,827.54, 938,279.43 and 393,505.50 is: 543,105.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,827.54 : 938,279.43 = 393,505.50 : x
  2. Step 2: Convert to fraction form
    679,827.54/938,279.43 = 393,505.50/x
  3. Step 3: Cross multiply
    679,827.54x = 938,279.43 × 393,505.50
  4. Step 4: Simplify right side
    679,827.54x = 369,218,116,241.87
  5. Step 5: Solve for x
    x = 369,218,116,241.87/679,827.54
  6. Step 6: Final answer
    x = 543,105.56

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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.