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Finding the Fourth Proportional to 504,360, 696,016.80 and 278,010.36

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Solution

The fourth proportional to 504,360, 696,016.80 and 278,010.36 is: 383,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,360 : 696,016.80 = 278,010.36 : x
  2. Step 2: Convert to fraction form
    504,360/696,016.80 = 278,010.36/x
  3. Step 3: Cross multiply
    504,360x = 696,016.80 × 278,010.36
  4. Step 4: Simplify right side
    504,360x = 193,499,881,134.05
  5. Step 5: Solve for x
    x = 193,499,881,134.05/504,360
  6. Step 6: Final answer
    x = 383,654.30

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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.