Home / 1,319,962.20-1,821,573.72-861,370.20

Finding the Fourth Proportional to 1,319,962.20, 1,821,573.72 and 861,370.20

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Solution

The fourth proportional to 1,319,962.20, 1,821,573.72 and 861,370.20 is: 1,188,707.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,962.20 : 1,821,573.72 = 861,370.20 : x
  2. Step 2: Convert to fraction form
    1,319,962.20/1,821,573.72 = 861,370.20/x
  3. Step 3: Cross multiply
    1,319,962.20x = 1,821,573.72 × 861,370.20
  4. Step 4: Simplify right side
    1,319,962.20x = 1,569,049,319,511.14
  5. Step 5: Solve for x
    x = 1,569,049,319,511.14/1,319,962.20
  6. Step 6: Final answer
    x = 1,188,707.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.