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Finding the Fourth Proportional to 504,974.13, 696,878.90 and 278,634.21

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Solution

The fourth proportional to 504,974.13, 696,878.90 and 278,634.21 is: 384,523.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,974.13 : 696,878.90 = 278,634.21 : x
  2. Step 2: Convert to fraction form
    504,974.13/696,878.90 = 278,634.21/x
  3. Step 3: Cross multiply
    504,974.13x = 696,878.90 × 278,634.21
  4. Step 4: Simplify right side
    504,974.13x = 194,174,301,767.17
  5. Step 5: Solve for x
    x = 194,174,301,767.17/504,974.13
  6. Step 6: Final answer
    x = 384,523.27

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1.5x scale

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.