Home / 1,442,147.32-1,990,413.12-869,188.24

Finding the Fourth Proportional to 1,442,147.32, 1,990,413.12 and 869,188.24

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Solution

The fourth proportional to 1,442,147.32, 1,990,413.12 and 869,188.24 is: 1,199,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,147.32 : 1,990,413.12 = 869,188.24 : x
  2. Step 2: Convert to fraction form
    1,442,147.32/1,990,413.12 = 869,188.24/x
  3. Step 3: Cross multiply
    1,442,147.32x = 1,990,413.12 × 869,188.24
  4. Step 4: Simplify right side
    1,442,147.32x = 1,730,043,676,645.71
  5. Step 5: Solve for x
    x = 1,730,043,676,645.71/1,442,147.32
  6. Step 6: Final answer
    x = 1,199,630.34

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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.