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Finding the Fourth Proportional to 559,494.18, 772,080.30 and 304,847.28

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Solution

The fourth proportional to 559,494.18, 772,080.30 and 304,847.28 is: 420,677.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,494.18 : 772,080.30 = 304,847.28 : x
  2. Step 2: Convert to fraction form
    559,494.18/772,080.30 = 304,847.28/x
  3. Step 3: Cross multiply
    559,494.18x = 772,080.30 × 304,847.28
  4. Step 4: Simplify right side
    559,494.18x = 235,366,579,396.58
  5. Step 5: Solve for x
    x = 235,366,579,396.58/559,494.18
  6. Step 6: Final answer
    x = 420,677.44

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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.