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Finding the Fourth Proportional to 571,618.43, 788,776.55 and 329,978.84

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Solution

The fourth proportional to 571,618.43, 788,776.55 and 329,978.84 is: 455,337.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,618.43 : 788,776.55 = 329,978.84 : x
  2. Step 2: Convert to fraction form
    571,618.43/788,776.55 = 329,978.84/x
  3. Step 3: Cross multiply
    571,618.43x = 788,776.55 × 329,978.84
  4. Step 4: Simplify right side
    571,618.43x = 260,279,570,988.20
  5. Step 5: Solve for x
    x = 260,279,570,988.20/571,618.43
  6. Step 6: Final answer
    x = 455,337.97

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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.