Home / 1,390,207.70-2,085,311.55-1,091,609.30

Finding the Fourth Proportional to 1,390,207.70, 2,085,311.55 and 1,091,609.30

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Solution

The fourth proportional to 1,390,207.70, 2,085,311.55 and 1,091,609.30 is: 1,637,413.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,207.70 : 2,085,311.55 = 1,091,609.30 : x
  2. Step 2: Convert to fraction form
    1,390,207.70/2,085,311.55 = 1,091,609.30/x
  3. Step 3: Cross multiply
    1,390,207.70x = 2,085,311.55 × 1,091,609.30
  4. Step 4: Simplify right side
    1,390,207.70x = 2,276,345,481,377.42
  5. Step 5: Solve for x
    x = 2,276,345,481,377.42/1,390,207.70
  6. Step 6: Final answer
    x = 1,637,413.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.