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Finding the Fourth Proportional to 504,990.32, 696,886.16 and 278,635.84

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Solution

The fourth proportional to 504,990.32, 696,886.16 and 278,635.84 is: 384,517.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,990.32 : 696,886.16 = 278,635.84 : x
  2. Step 2: Convert to fraction form
    504,990.32/696,886.16 = 278,635.84/x
  3. Step 3: Cross multiply
    504,990.32x = 696,886.16 × 278,635.84
  4. Step 4: Simplify right side
    504,990.32x = 194,177,460,575.97
  5. Step 5: Solve for x
    x = 194,177,460,575.97/504,990.32
  6. Step 6: Final answer
    x = 384,517.19

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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.