Home / 1,289,535.20-1,936,368.30-1,025,491.40

Finding the Fourth Proportional to 1,289,535.20, 1,936,368.30 and 1,025,491.40

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Solution

The fourth proportional to 1,289,535.20, 1,936,368.30 and 1,025,491.40 is: 1,539,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,535.20 : 1,936,368.30 = 1,025,491.40 : x
  2. Step 2: Convert to fraction form
    1,289,535.20/1,936,368.30 = 1,025,491.40/x
  3. Step 3: Cross multiply
    1,289,535.20x = 1,936,368.30 × 1,025,491.40
  4. Step 4: Simplify right side
    1,289,535.20x = 1,985,729,038,882.62
  5. Step 5: Solve for x
    x = 1,985,729,038,882.62/1,289,535.20
  6. Step 6: Final answer
    x = 1,539,879.67

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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.