Home / 505,115.52-697,056.18-278,761.02

Finding the Fourth Proportional to 505,115.52, 697,056.18 and 278,761.02

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Solution

The fourth proportional to 505,115.52, 697,056.18 and 278,761.02 is: 384,688.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,115.52 : 697,056.18 = 278,761.02 : x
  2. Step 2: Convert to fraction form
    505,115.52/697,056.18 = 278,761.02/x
  3. Step 3: Cross multiply
    505,115.52x = 697,056.18 × 278,761.02
  4. Step 4: Simplify right side
    505,115.52x = 194,312,091,734.10
  5. Step 5: Solve for x
    x = 194,312,091,734.10/505,115.52
  6. Step 6: Final answer
    x = 384,688.42

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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.