Home / 1,182,938.86-1,778,112.54-780,716.12

Finding the Fourth Proportional to 1,182,938.86, 1,778,112.54 and 780,716.12

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Solution

The fourth proportional to 1,182,938.86, 1,778,112.54 and 780,716.12 is: 1,173,518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182,938.86 : 1,778,112.54 = 780,716.12 : x
  2. Step 2: Convert to fraction form
    1,182,938.86/1,778,112.54 = 780,716.12/x
  3. Step 3: Cross multiply
    1,182,938.86x = 1,778,112.54 × 780,716.12
  4. Step 4: Simplify right side
    1,182,938.86x = 1,388,201,117,189.27
  5. Step 5: Solve for x
    x = 1,388,201,117,189.27/1,182,938.86
  6. Step 6: Final answer
    x = 1,173,518.91

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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.