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Finding the Fourth Proportional to 571,081.14, 788,074.91 and 312,955.00

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Solution

The fourth proportional to 571,081.14, 788,074.91 and 312,955.00 is: 431,868.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,081.14 : 788,074.91 = 312,955.00 : x
  2. Step 2: Convert to fraction form
    571,081.14/788,074.91 = 312,955.00/x
  3. Step 3: Cross multiply
    571,081.14x = 788,074.91 × 312,955.00
  4. Step 4: Simplify right side
    571,081.14x = 246,631,979,924.09
  5. Step 5: Solve for x
    x = 246,631,979,924.09/571,081.14
  6. Step 6: Final answer
    x = 431,868.54

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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.