Home / 679,590.45-937,729.85-393,137.19

Finding the Fourth Proportional to 679,590.45, 937,729.85 and 393,137.19

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Solution

The fourth proportional to 679,590.45, 937,729.85 and 393,137.19 is: 542,468.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,590.45 : 937,729.85 = 393,137.19 : x
  2. Step 2: Convert to fraction form
    679,590.45/937,729.85 = 393,137.19/x
  3. Step 3: Cross multiply
    679,590.45x = 937,729.85 × 393,137.19
  4. Step 4: Simplify right side
    679,590.45x = 368,656,476,242.44
  5. Step 5: Solve for x
    x = 368,656,476,242.44/679,590.45
  6. Step 6: Final answer
    x = 542,468.59

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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.