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Finding the Fourth Proportional to 492,279.56, 679,365.78 and 277,428.68

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Solution

The fourth proportional to 492,279.56, 679,365.78 and 277,428.68 is: 382,862.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,279.56 : 679,365.78 = 277,428.68 : x
  2. Step 2: Convert to fraction form
    492,279.56/679,365.78 = 277,428.68/x
  3. Step 3: Cross multiply
    492,279.56x = 679,365.78 × 277,428.68
  4. Step 4: Simplify right side
    492,279.56x = 188,475,551,582.57
  5. Step 5: Solve for x
    x = 188,475,551,582.57/492,279.56
  6. Step 6: Final answer
    x = 382,862.84

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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.