Home / 758,729.91-1,138,094.87-421,609.33

Finding the Fourth Proportional to 758,729.91, 1,138,094.87 and 421,609.33

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Solution

The fourth proportional to 758,729.91, 1,138,094.87 and 421,609.33 is: 632,413.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,729.91 : 1,138,094.87 = 421,609.33 : x
  2. Step 2: Convert to fraction form
    758,729.91/1,138,094.87 = 421,609.33/x
  3. Step 3: Cross multiply
    758,729.91x = 1,138,094.87 × 421,609.33
  4. Step 4: Simplify right side
    758,729.91x = 479,831,412,323.68
  5. Step 5: Solve for x
    x = 479,831,412,323.68/758,729.91
  6. Step 6: Final answer
    x = 632,413.99

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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.