Home / 1,431,811.67-1,975,937.52-778,481.64

Finding the Fourth Proportional to 1,431,811.67, 1,975,937.52 and 778,481.64

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Solution

The fourth proportional to 1,431,811.67, 1,975,937.52 and 778,481.64 is: 1,074,325.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,811.67 : 1,975,937.52 = 778,481.64 : x
  2. Step 2: Convert to fraction form
    1,431,811.67/1,975,937.52 = 778,481.64/x
  3. Step 3: Cross multiply
    1,431,811.67x = 1,975,937.52 × 778,481.64
  4. Step 4: Simplify right side
    1,431,811.67x = 1,538,231,081,107.13
  5. Step 5: Solve for x
    x = 1,538,231,081,107.13/1,431,811.67
  6. Step 6: Final answer
    x = 1,074,325.01

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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.