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Finding the Fourth Proportional to 492,308.85, 679,376.74 and 277,444.61

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Solution

The fourth proportional to 492,308.85, 679,376.74 and 277,444.61 is: 382,868.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,308.85 : 679,376.74 = 277,444.61 : x
  2. Step 2: Convert to fraction form
    492,308.85/679,376.74 = 277,444.61/x
  3. Step 3: Cross multiply
    492,308.85x = 679,376.74 × 277,444.61
  4. Step 4: Simplify right side
    492,308.85x = 188,489,412,991.72
  5. Step 5: Solve for x
    x = 188,489,412,991.72/492,308.85
  6. Step 6: Final answer
    x = 382,868.22

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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.