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Finding the Fourth Proportional to 492,457.80, 679,596.30 and 277,578.84

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Solution

The fourth proportional to 492,457.80, 679,596.30 and 277,578.84 is: 383,061.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,457.80 : 679,596.30 = 277,578.84 : x
  2. Step 2: Convert to fraction form
    492,457.80/679,596.30 = 277,578.84/x
  3. Step 3: Cross multiply
    492,457.80x = 679,596.30 × 277,578.84
  4. Step 4: Simplify right side
    492,457.80x = 188,641,552,622.29
  5. Step 5: Solve for x
    x = 188,641,552,622.29/492,457.80
  6. Step 6: Final answer
    x = 383,061.36

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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.