Home / 2,990,320.80-4,486,168.08-860,422.56

Finding the Fourth Proportional to 2,990,320.80, 4,486,168.08 and 860,422.56

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Solution

The fourth proportional to 2,990,320.80, 4,486,168.08 and 860,422.56 is: 1,290,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990,320.80 : 4,486,168.08 = 860,422.56 : x
  2. Step 2: Convert to fraction form
    2,990,320.80/4,486,168.08 = 860,422.56/x
  3. Step 3: Cross multiply
    2,990,320.80x = 4,486,168.08 × 860,422.56
  4. Step 4: Simplify right side
    2,990,320.80x = 3,860,000,223,983.89
  5. Step 5: Solve for x
    x = 3,860,000,223,983.89/2,990,320.80
  6. Step 6: Final answer
    x = 1,290,831.48

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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.