Home / 763,762.80-1,145,212.20-290,463.60

Finding the Fourth Proportional to 763,762.80, 1,145,212.20 and 290,463.60

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Solution

The fourth proportional to 763,762.80, 1,145,212.20 and 290,463.60 is: 435,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,762.80 : 1,145,212.20 = 290,463.60 : x
  2. Step 2: Convert to fraction form
    763,762.80/1,145,212.20 = 290,463.60/x
  3. Step 3: Cross multiply
    763,762.80x = 1,145,212.20 × 290,463.60
  4. Step 4: Simplify right side
    763,762.80x = 332,642,458,375.92
  5. Step 5: Solve for x
    x = 332,642,458,375.92/763,762.80
  6. Step 6: Final answer
    x = 435,531.11

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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.