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Finding the Fourth Proportional to 504,979, 696,885.60 and 278,639.08

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Solution

The fourth proportional to 504,979, 696,885.60 and 278,639.08 is: 384,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,979 : 696,885.60 = 278,639.08 : x
  2. Step 2: Convert to fraction form
    504,979/696,885.60 = 278,639.08/x
  3. Step 3: Cross multiply
    504,979x = 696,885.60 × 278,639.08
  4. Step 4: Simplify right side
    504,979x = 194,179,562,449.25
  5. Step 5: Solve for x
    x = 194,179,562,449.25/504,979
  6. Step 6: Final answer
    x = 384,529.98

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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.