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Finding the Fourth Proportional to 492,291.56, 679,382.34 and 277,440.68

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Solution

The fourth proportional to 492,291.56, 679,382.34 and 277,440.68 is: 382,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,291.56 : 679,382.34 = 277,440.68 : x
  2. Step 2: Convert to fraction form
    492,291.56/679,382.34 = 277,440.68/x
  3. Step 3: Cross multiply
    492,291.56x = 679,382.34 × 277,440.68
  4. Step 4: Simplify right side
    492,291.56x = 188,488,298,389.59
  5. Step 5: Solve for x
    x = 188,488,298,389.59/492,291.56
  6. Step 6: Final answer
    x = 382,879.40

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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.