Home / 1,338,047.40-2,007,071.10-939,138.60

Finding the Fourth Proportional to 1,338,047.40, 2,007,071.10 and 939,138.60

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Solution

The fourth proportional to 1,338,047.40, 2,007,071.10 and 939,138.60 is: 1,408,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,047.40 : 2,007,071.10 = 939,138.60 : x
  2. Step 2: Convert to fraction form
    1,338,047.40/2,007,071.10 = 939,138.60/x
  3. Step 3: Cross multiply
    1,338,047.40x = 2,007,071.10 × 939,138.60
  4. Step 4: Simplify right side
    1,338,047.40x = 1,884,917,942,954.46
  5. Step 5: Solve for x
    x = 1,884,917,942,954.46/1,338,047.40
  6. Step 6: Final answer
    x = 1,408,707.90

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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.