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Finding the Fourth Proportional to 505,339.24, 697,369.08 and 278,984.92

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Solution

The fourth proportional to 505,339.24, 697,369.08 and 278,984.92 is: 384,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,339.24 : 697,369.08 = 278,984.92 : x
  2. Step 2: Convert to fraction form
    505,339.24/697,369.08 = 278,984.92/x
  3. Step 3: Cross multiply
    505,339.24x = 697,369.08 × 278,984.92
  4. Step 4: Simplify right side
    505,339.24x = 194,555,456,994.27
  5. Step 5: Solve for x
    x = 194,555,456,994.27/505,339.24
  6. Step 6: Final answer
    x = 384,999.70

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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.