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Finding the Fourth Proportional to 504,987, 696,896.64 and 278,647.08

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Solution

The fourth proportional to 504,987, 696,896.64 and 278,647.08 is: 384,541.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,987 : 696,896.64 = 278,647.08 : x
  2. Step 2: Convert to fraction form
    504,987/696,896.64 = 278,647.08/x
  3. Step 3: Cross multiply
    504,987x = 696,896.64 × 278,647.08
  4. Step 4: Simplify right side
    504,987x = 194,188,213,797.81
  5. Step 5: Solve for x
    x = 194,188,213,797.81/504,987
  6. Step 6: Final answer
    x = 384,541.02

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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.