Home / 3,985,810.92-5,979,665.52-1,290,136.68

Finding the Fourth Proportional to 3,985,810.92, 5,979,665.52 and 1,290,136.68

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Solution

The fourth proportional to 3,985,810.92, 5,979,665.52 and 1,290,136.68 is: 1,935,512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,810.92 : 5,979,665.52 = 1,290,136.68 : x
  2. Step 2: Convert to fraction form
    3,985,810.92/5,979,665.52 = 1,290,136.68/x
  3. Step 3: Cross multiply
    3,985,810.92x = 5,979,665.52 × 1,290,136.68
  4. Step 4: Simplify right side
    3,985,810.92x = 7,714,585,821,483.27
  5. Step 5: Solve for x
    x = 7,714,585,821,483.27/3,985,810.92
  6. Step 6: Final answer
    x = 1,935,512.24

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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.