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Finding the Fourth Proportional to 492,442.32, 679,560.84 and 277,578.30

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Solution

The fourth proportional to 492,442.32, 679,560.84 and 277,578.30 is: 383,052.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,442.32 : 679,560.84 = 277,578.30 : x
  2. Step 2: Convert to fraction form
    492,442.32/679,560.84 = 277,578.30/x
  3. Step 3: Cross multiply
    492,442.32x = 679,560.84 × 277,578.30
  4. Step 4: Simplify right side
    492,442.32x = 188,631,342,713.77
  5. Step 5: Solve for x
    x = 188,631,342,713.77/492,442.32
  6. Step 6: Final answer
    x = 383,052.66

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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.