Home / 1,274,979.62-1,912,010.15-421,893.80

Finding the Fourth Proportional to 1,274,979.62, 1,912,010.15 and 421,893.80

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Solution

The fourth proportional to 1,274,979.62, 1,912,010.15 and 421,893.80 is: 632,688.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,979.62 : 1,912,010.15 = 421,893.80 : x
  2. Step 2: Convert to fraction form
    1,274,979.62/1,912,010.15 = 421,893.80/x
  3. Step 3: Cross multiply
    1,274,979.62x = 1,912,010.15 × 421,893.80
  4. Step 4: Simplify right side
    1,274,979.62x = 806,665,226,486.79
  5. Step 5: Solve for x
    x = 806,665,226,486.79/1,274,979.62
  6. Step 6: Final answer
    x = 632,688.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.