Home / 505,140.52-697,090.74-278,785.96

Finding the Fourth Proportional to 505,140.52, 697,090.74 and 278,785.96

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Solution

The fourth proportional to 505,140.52, 697,090.74 and 278,785.96 is: 384,722.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,140.52 : 697,090.74 = 278,785.96 : x
  2. Step 2: Convert to fraction form
    505,140.52/697,090.74 = 278,785.96/x
  3. Step 3: Cross multiply
    505,140.52x = 697,090.74 × 278,785.96
  4. Step 4: Simplify right side
    505,140.52x = 194,339,111,158.01
  5. Step 5: Solve for x
    x = 194,339,111,158.01/505,140.52
  6. Step 6: Final answer
    x = 384,722.87

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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.