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Finding the Fourth Proportional to 965,315.20, 1,448,491.20 and 404,406.40

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Solution

The fourth proportional to 965,315.20, 1,448,491.20 and 404,406.40 is: 606,826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    965,315.20 : 1,448,491.20 = 404,406.40 : x
  2. Step 2: Convert to fraction form
    965,315.20/1,448,491.20 = 404,406.40/x
  3. Step 3: Cross multiply
    965,315.20x = 1,448,491.20 × 404,406.40
  4. Step 4: Simplify right side
    965,315.20x = 585,779,111,623.68
  5. Step 5: Solve for x
    x = 585,779,111,623.68/965,315.20
  6. Step 6: Final answer
    x = 606,826.78

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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.