Home / 1,285,952.72-1,929,001.98-387,518.54

Finding the Fourth Proportional to 1,285,952.72, 1,929,001.98 and 387,518.54

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Solution

The fourth proportional to 1,285,952.72, 1,929,001.98 and 387,518.54 is: 581,299.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,952.72 : 1,929,001.98 = 387,518.54 : x
  2. Step 2: Convert to fraction form
    1,285,952.72/1,929,001.98 = 387,518.54/x
  3. Step 3: Cross multiply
    1,285,952.72x = 1,929,001.98 × 387,518.54
  4. Step 4: Simplify right side
    1,285,952.72x = 747,524,021,301.70
  5. Step 5: Solve for x
    x = 747,524,021,301.70/1,285,952.72
  6. Step 6: Final answer
    x = 581,299.77

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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.