Home / 856,811.80-1,285,486.32-515,627.56

Finding the Fourth Proportional to 856,811.80, 1,285,486.32 and 515,627.56

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Solution

The fourth proportional to 856,811.80, 1,285,486.32 and 515,627.56 is: 773,602.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,811.80 : 1,285,486.32 = 515,627.56 : x
  2. Step 2: Convert to fraction form
    856,811.80/1,285,486.32 = 515,627.56/x
  3. Step 3: Cross multiply
    856,811.80x = 1,285,486.32 × 515,627.56
  4. Step 4: Simplify right side
    856,811.80x = 662,832,174,594.98
  5. Step 5: Solve for x
    x = 662,832,174,594.98/856,811.80
  6. Step 6: Final answer
    x = 773,602.99

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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.