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Finding the Fourth Proportional to 1,361,831.60, 1,879,327.56 and 788,982.48

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Solution

The fourth proportional to 1,361,831.60, 1,879,327.56 and 788,982.48 is: 1,088,795.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361,831.60 : 1,879,327.56 = 788,982.48 : x
  2. Step 2: Convert to fraction form
    1,361,831.60/1,879,327.56 = 788,982.48/x
  3. Step 3: Cross multiply
    1,361,831.60x = 1,879,327.56 × 788,982.48
  4. Step 4: Simplify right side
    1,361,831.60x = 1,482,756,519,021.15
  5. Step 5: Solve for x
    x = 1,482,756,519,021.15/1,361,831.60
  6. Step 6: Final answer
    x = 1,088,795.79

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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.