Home / 1,247,413.40-1,867,620.90-1,212,421.40

Finding the Fourth Proportional to 1,247,413.40, 1,867,620.90 and 1,212,421.40

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Solution

The fourth proportional to 1,247,413.40, 1,867,620.90 and 1,212,421.40 is: 1,815,231.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,413.40 : 1,867,620.90 = 1,212,421.40 : x
  2. Step 2: Convert to fraction form
    1,247,413.40/1,867,620.90 = 1,212,421.40/x
  3. Step 3: Cross multiply
    1,247,413.40x = 1,867,620.90 × 1,212,421.40
  4. Step 4: Simplify right side
    1,247,413.40x = 2,264,343,546,247.26
  5. Step 5: Solve for x
    x = 2,264,343,546,247.26/1,247,413.40
  6. Step 6: Final answer
    x = 1,815,231.06

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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.