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Finding the Fourth Proportional to 571,691.35, 788,928.69 and 313,563.02

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Solution

The fourth proportional to 571,691.35, 788,928.69 and 313,563.02 is: 432,714.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,691.35 : 788,928.69 = 313,563.02 : x
  2. Step 2: Convert to fraction form
    571,691.35/788,928.69 = 313,563.02/x
  3. Step 3: Cross multiply
    571,691.35x = 788,928.69 × 313,563.02
  4. Step 4: Simplify right side
    571,691.35x = 247,378,859,832.26
  5. Step 5: Solve for x
    x = 247,378,859,832.26/571,691.35
  6. Step 6: Final answer
    x = 432,714.01

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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.