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Finding the Fourth Proportional to 505,879.07, 697,326.65 and 344,456.60

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Solution

The fourth proportional to 505,879.07, 697,326.65 and 344,456.60 is: 474,814.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,879.07 : 697,326.65 = 344,456.60 : x
  2. Step 2: Convert to fraction form
    505,879.07/697,326.65 = 344,456.60/x
  3. Step 3: Cross multiply
    505,879.07x = 697,326.65 × 344,456.60
  4. Step 4: Simplify right side
    505,879.07x = 240,198,763,461.76
  5. Step 5: Solve for x
    x = 240,198,763,461.76/505,879.07
  6. Step 6: Final answer
    x = 474,814.60

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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.