Home / 739,449.58-1,020,440.43-399,917.83

Finding the Fourth Proportional to 739,449.58, 1,020,440.43 and 399,917.83

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Solution

The fourth proportional to 739,449.58, 1,020,440.43 and 399,917.83 is: 551,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,449.58 : 1,020,440.43 = 399,917.83 : x
  2. Step 2: Convert to fraction form
    739,449.58/1,020,440.43 = 399,917.83/x
  3. Step 3: Cross multiply
    739,449.58x = 1,020,440.43 × 399,917.83
  4. Step 4: Simplify right side
    739,449.58x = 408,092,322,409.87
  5. Step 5: Solve for x
    x = 408,092,322,409.87/739,449.58
  6. Step 6: Final answer
    x = 551,886.61

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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.