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Finding the Fourth Proportional to 559,929.60, 839,894.40 and 279,410.40

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Solution

The fourth proportional to 559,929.60, 839,894.40 and 279,410.40 is: 419,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,929.60 : 839,894.40 = 279,410.40 : x
  2. Step 2: Convert to fraction form
    559,929.60/839,894.40 = 279,410.40/x
  3. Step 3: Cross multiply
    559,929.60x = 839,894.40 × 279,410.40
  4. Step 4: Simplify right side
    559,929.60x = 234,675,230,261.76
  5. Step 5: Solve for x
    x = 234,675,230,261.76/559,929.60
  6. Step 6: Final answer
    x = 419,115.60

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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.