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Finding the Fourth Proportional to 492,813.92, 679,923.92 and 274,987.37

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Solution

The fourth proportional to 492,813.92, 679,923.92 and 274,987.37 is: 379,393.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,813.92 : 679,923.92 = 274,987.37 : x
  2. Step 2: Convert to fraction form
    492,813.92/679,923.92 = 274,987.37/x
  3. Step 3: Cross multiply
    492,813.92x = 679,923.92 × 274,987.37
  4. Step 4: Simplify right side
    492,813.92x = 186,970,492,948.17
  5. Step 5: Solve for x
    x = 186,970,492,948.17/492,813.92
  6. Step 6: Final answer
    x = 379,393.69

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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.