Home / 2,139,140.40-3,207,673.80-1,191,505.20

Finding the Fourth Proportional to 2,139,140.40, 3,207,673.80 and 1,191,505.20

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Solution

The fourth proportional to 2,139,140.40, 3,207,673.80 and 1,191,505.20 is: 1,786,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139,140.40 : 3,207,673.80 = 1,191,505.20 : x
  2. Step 2: Convert to fraction form
    2,139,140.40/3,207,673.80 = 1,191,505.20/x
  3. Step 3: Cross multiply
    2,139,140.40x = 3,207,673.80 × 1,191,505.20
  4. Step 4: Simplify right side
    2,139,140.40x = 3,821,960,012,603.76
  5. Step 5: Solve for x
    x = 3,821,960,012,603.76/2,139,140.40
  6. Step 6: Final answer
    x = 1,786,680.30

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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.