Home / 3,118,440-4,303,447.20-1,687,656

Finding the Fourth Proportional to 3,118,440, 4,303,447.20 and 1,687,656

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Solution

The fourth proportional to 3,118,440, 4,303,447.20 and 1,687,656 is: 2,328,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,440 : 4,303,447.20 = 1,687,656 : x
  2. Step 2: Convert to fraction form
    3,118,440/4,303,447.20 = 1,687,656/x
  3. Step 3: Cross multiply
    3,118,440x = 4,303,447.20 × 1,687,656
  4. Step 4: Simplify right side
    3,118,440x = 7,262,738,487,763.20
  5. Step 5: Solve for x
    x = 7,262,738,487,763.20/3,118,440
  6. Step 6: Final answer
    x = 2,328,965.28

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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.