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Finding the Fourth Proportional to 700,036.40, 965,879.16 and 394,050.80

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Solution

The fourth proportional to 700,036.40, 965,879.16 and 394,050.80 is: 543,693.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,036.40 : 965,879.16 = 394,050.80 : x
  2. Step 2: Convert to fraction form
    700,036.40/965,879.16 = 394,050.80/x
  3. Step 3: Cross multiply
    700,036.40x = 965,879.16 × 394,050.80
  4. Step 4: Simplify right side
    700,036.40x = 380,605,455,701.33
  5. Step 5: Solve for x
    x = 380,605,455,701.33/700,036.40
  6. Step 6: Final answer
    x = 543,693.81

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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.