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Finding the Fourth Proportional to 492,403.32, 679,507.11 and 277,539.21

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Solution

The fourth proportional to 492,403.32, 679,507.11 and 277,539.21 is: 382,998.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,403.32 : 679,507.11 = 277,539.21 : x
  2. Step 2: Convert to fraction form
    492,403.32/679,507.11 = 277,539.21/x
  3. Step 3: Cross multiply
    492,403.32x = 679,507.11 × 277,539.21
  4. Step 4: Simplify right side
    492,403.32x = 188,589,866,498.78
  5. Step 5: Solve for x
    x = 188,589,866,498.78/492,403.32
  6. Step 6: Final answer
    x = 382,998.77

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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.