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Finding the Fourth Proportional to 559,414.60, 839,121.90 and 346,838.20

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Solution

The fourth proportional to 559,414.60, 839,121.90 and 346,838.20 is: 520,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,414.60 : 839,121.90 = 346,838.20 : x
  2. Step 2: Convert to fraction form
    559,414.60/839,121.90 = 346,838.20/x
  3. Step 3: Cross multiply
    559,414.60x = 839,121.90 × 346,838.20
  4. Step 4: Simplify right side
    559,414.60x = 291,039,529,376.58
  5. Step 5: Solve for x
    x = 291,039,529,376.58/559,414.60
  6. Step 6: Final answer
    x = 520,257.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.