Home / 3,129,071.79-4,685,198.42-1,985,643.30

Finding the Fourth Proportional to 3,129,071.79, 4,685,198.42 and 1,985,643.30

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Solution

The fourth proportional to 3,129,071.79, 4,685,198.42 and 1,985,643.30 is: 2,973,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129,071.79 : 4,685,198.42 = 1,985,643.30 : x
  2. Step 2: Convert to fraction form
    3,129,071.79/4,685,198.42 = 1,985,643.30/x
  3. Step 3: Cross multiply
    3,129,071.79x = 4,685,198.42 × 1,985,643.30
  4. Step 4: Simplify right side
    3,129,071.79x = 9,303,132,841,915.37
  5. Step 5: Solve for x
    x = 9,303,132,841,915.37/3,129,071.79
  6. Step 6: Final answer
    x = 2,973,128.60

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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.