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Finding the Fourth Proportional to 505,427.83, 697,493.78 and 275,986.71

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Solution

The fourth proportional to 505,427.83, 697,493.78 and 275,986.71 is: 380,863.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,427.83 : 697,493.78 = 275,986.71 : x
  2. Step 2: Convert to fraction form
    505,427.83/697,493.78 = 275,986.71/x
  3. Step 3: Cross multiply
    505,427.83x = 697,493.78 × 275,986.71
  4. Step 4: Simplify right side
    505,427.83x = 192,499,013,587.66
  5. Step 5: Solve for x
    x = 192,499,013,587.66/505,427.83
  6. Step 6: Final answer
    x = 380,863.50

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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.