Home / 739,451.35-1,020,442.86-399,919.60

Finding the Fourth Proportional to 739,451.35, 1,020,442.86 and 399,919.60

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Solution

The fourth proportional to 739,451.35, 1,020,442.86 and 399,919.60 is: 551,889.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,451.35 : 1,020,442.86 = 399,919.60 : x
  2. Step 2: Convert to fraction form
    739,451.35/1,020,442.86 = 399,919.60/x
  3. Step 3: Cross multiply
    739,451.35x = 1,020,442.86 × 399,919.60
  4. Step 4: Simplify right side
    739,451.35x = 408,095,093,292.24
  5. Step 5: Solve for x
    x = 408,095,093,292.24/739,451.35
  6. Step 6: Final answer
    x = 551,889.04

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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.