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Finding the Fourth Proportional to 615,067.48, 848,039.03 and 505,789.93

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Solution

The fourth proportional to 615,067.48, 848,039.03 and 505,789.93 is: 697,369.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,067.48 : 848,039.03 = 505,789.93 : x
  2. Step 2: Convert to fraction form
    615,067.48/848,039.03 = 505,789.93/x
  3. Step 3: Cross multiply
    615,067.48x = 848,039.03 × 505,789.93
  4. Step 4: Simplify right side
    615,067.48x = 428,929,604,893.85
  5. Step 5: Solve for x
    x = 428,929,604,893.85/615,067.48
  6. Step 6: Final answer
    x = 697,369.99

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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.