Home / 1,208,986.80-1,817,416.80-856,442.40

Finding the Fourth Proportional to 1,208,986.80, 1,817,416.80 and 856,442.40

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Solution

The fourth proportional to 1,208,986.80, 1,817,416.80 and 856,442.40 is: 1,287,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,986.80 : 1,817,416.80 = 856,442.40 : x
  2. Step 2: Convert to fraction form
    1,208,986.80/1,817,416.80 = 856,442.40/x
  3. Step 3: Cross multiply
    1,208,986.80x = 1,817,416.80 × 856,442.40
  4. Step 4: Simplify right side
    1,208,986.80x = 1,556,512,805,992.32
  5. Step 5: Solve for x
    x = 1,556,512,805,992.32/1,208,986.80
  6. Step 6: Final answer
    x = 1,287,452.27

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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.