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Finding the Fourth Proportional to 571,617.92, 788,775.86 and 329,978.34

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Solution

The fourth proportional to 571,617.92, 788,775.86 and 329,978.34 is: 455,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,617.92 : 788,775.86 = 329,978.34 : x
  2. Step 2: Convert to fraction form
    571,617.92/788,775.86 = 329,978.34/x
  3. Step 3: Cross multiply
    571,617.92x = 788,775.86 × 329,978.34
  4. Step 4: Simplify right side
    571,617.92x = 260,278,949,739.82
  5. Step 5: Solve for x
    x = 260,278,949,739.82/571,617.92
  6. Step 6: Final answer
    x = 455,337.28

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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.