Home / 739,454.50-1,020,447.21-399,922.75

Finding the Fourth Proportional to 739,454.50, 1,020,447.21 and 399,922.75

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Solution

The fourth proportional to 739,454.50, 1,020,447.21 and 399,922.75 is: 551,893.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,454.50 : 1,020,447.21 = 399,922.75 : x
  2. Step 2: Convert to fraction form
    739,454.50/1,020,447.21 = 399,922.75/x
  3. Step 3: Cross multiply
    739,454.50x = 1,020,447.21 × 399,922.75
  4. Step 4: Simplify right side
    739,454.50x = 408,100,054,453.03
  5. Step 5: Solve for x
    x = 408,100,054,453.03/739,454.50
  6. Step 6: Final answer
    x = 551,893.40

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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.