Home / 1,287,647.48-1,933,367.25-720,140.46

Finding the Fourth Proportional to 1,287,647.48, 1,933,367.25 and 720,140.46

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Solution

The fourth proportional to 1,287,647.48, 1,933,367.25 and 720,140.46 is: 1,081,271.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,647.48 : 1,933,367.25 = 720,140.46 : x
  2. Step 2: Convert to fraction form
    1,287,647.48/1,933,367.25 = 720,140.46/x
  3. Step 3: Cross multiply
    1,287,647.48x = 1,933,367.25 × 720,140.46
  4. Step 4: Simplify right side
    1,287,647.48x = 1,392,295,980,763.93
  5. Step 5: Solve for x
    x = 1,392,295,980,763.93/1,287,647.48
  6. Step 6: Final answer
    x = 1,081,271.08

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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.