Home / 1,263,730.80-1,892,831.40-764,223.60

Finding the Fourth Proportional to 1,263,730.80, 1,892,831.40 and 764,223.60

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Solution

The fourth proportional to 1,263,730.80, 1,892,831.40 and 764,223.60 is: 1,144,663.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,730.80 : 1,892,831.40 = 764,223.60 : x
  2. Step 2: Convert to fraction form
    1,263,730.80/1,892,831.40 = 764,223.60/x
  3. Step 3: Cross multiply
    1,263,730.80x = 1,892,831.40 × 764,223.60
  4. Step 4: Simplify right side
    1,263,730.80x = 1,446,546,426,701.04
  5. Step 5: Solve for x
    x = 1,446,546,426,701.04/1,263,730.80
  6. Step 6: Final answer
    x = 1,144,663.43

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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.