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Finding the Fourth Proportional to 571,618.32, 788,776.44 and 329,978.74

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Solution

The fourth proportional to 571,618.32, 788,776.44 and 329,978.74 is: 455,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,618.32 : 788,776.44 = 329,978.74 : x
  2. Step 2: Convert to fraction form
    571,618.32/788,776.44 = 329,978.74/x
  3. Step 3: Cross multiply
    571,618.32x = 788,776.44 × 329,978.74
  4. Step 4: Simplify right side
    571,618.32x = 260,279,455,812.89
  5. Step 5: Solve for x
    x = 260,279,455,812.89/571,618.32
  6. Step 6: Final answer
    x = 455,337.85

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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.