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Finding the Fourth Proportional to 1,531,831.06, 2,113,844.07 and 843,368.86

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Solution

The fourth proportional to 1,531,831.06, 2,113,844.07 and 843,368.86 is: 1,163,803.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531,831.06 : 2,113,844.07 = 843,368.86 : x
  2. Step 2: Convert to fraction form
    1,531,831.06/2,113,844.07 = 843,368.86/x
  3. Step 3: Cross multiply
    1,531,831.06x = 2,113,844.07 × 843,368.86
  4. Step 4: Simplify right side
    1,531,831.06x = 1,782,750,263,533.66
  5. Step 5: Solve for x
    x = 1,782,750,263,533.66/1,531,831.06
  6. Step 6: Final answer
    x = 1,163,803.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.