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Finding the Fourth Proportional to 508,405.17, 701,575.66 and 278,956.74

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Solution

The fourth proportional to 508,405.17, 701,575.66 and 278,956.74 is: 384,947.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,405.17 : 701,575.66 = 278,956.74 : x
  2. Step 2: Convert to fraction form
    508,405.17/701,575.66 = 278,956.74/x
  3. Step 3: Cross multiply
    508,405.17x = 701,575.66 × 278,956.74
  4. Step 4: Simplify right side
    508,405.17x = 195,709,258,976.95
  5. Step 5: Solve for x
    x = 195,709,258,976.95/508,405.17
  6. Step 6: Final answer
    x = 384,947.42

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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.