Home / 739,452.06-1,020,443.85-399,920.31

Finding the Fourth Proportional to 739,452.06, 1,020,443.85 and 399,920.31

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Solution

The fourth proportional to 739,452.06, 1,020,443.85 and 399,920.31 is: 551,890.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,452.06 : 1,020,443.85 = 399,920.31 : x
  2. Step 2: Convert to fraction form
    739,452.06/1,020,443.85 = 399,920.31/x
  3. Step 3: Cross multiply
    739,452.06x = 1,020,443.85 × 399,920.31
  4. Step 4: Simplify right side
    739,452.06x = 408,096,223,380.70
  5. Step 5: Solve for x
    x = 408,096,223,380.70/739,452.06
  6. Step 6: Final answer
    x = 551,890.03

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Double scale
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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.