Home / 740,813.73-1,111,375.52-421,112.61

Finding the Fourth Proportional to 740,813.73, 1,111,375.52 and 421,112.61

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Solution

The fourth proportional to 740,813.73, 1,111,375.52 and 421,112.61 is: 631,756.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,813.73 : 1,111,375.52 = 421,112.61 : x
  2. Step 2: Convert to fraction form
    740,813.73/1,111,375.52 = 421,112.61/x
  3. Step 3: Cross multiply
    740,813.73x = 1,111,375.52 × 421,112.61
  4. Step 4: Simplify right side
    740,813.73x = 468,014,243,811.74
  5. Step 5: Solve for x
    x = 468,014,243,811.74/740,813.73
  6. Step 6: Final answer
    x = 631,756.98

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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.