Home / 939,865-1,409,334.54-340,736.28

Finding the Fourth Proportional to 939,865, 1,409,334.54 and 340,736.28

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Solution

The fourth proportional to 939,865, 1,409,334.54 and 340,736.28 is: 510,936.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,865 : 1,409,334.54 = 340,736.28 : x
  2. Step 2: Convert to fraction form
    939,865/1,409,334.54 = 340,736.28/x
  3. Step 3: Cross multiply
    939,865x = 1,409,334.54 × 340,736.28
  4. Step 4: Simplify right side
    939,865x = 480,211,408,435.11
  5. Step 5: Solve for x
    x = 480,211,408,435.11/939,865
  6. Step 6: Final answer
    x = 510,936.58

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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.