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Finding the Fourth Proportional to 508,437.77, 701,630.78 and 278,994.35

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Solution

The fourth proportional to 508,437.77, 701,630.78 and 278,994.35 is: 385,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,437.77 : 701,630.78 = 278,994.35 : x
  2. Step 2: Convert to fraction form
    508,437.77/701,630.78 = 278,994.35/x
  3. Step 3: Cross multiply
    508,437.77x = 701,630.78 × 278,994.35
  4. Step 4: Simplify right side
    508,437.77x = 195,751,022,011.12
  5. Step 5: Solve for x
    x = 195,751,022,011.12/508,437.77
  6. Step 6: Final answer
    x = 385,004.88

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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.