Home / 3,280,779.40-4,921,169.10-2,087,989.60

Finding the Fourth Proportional to 3,280,779.40, 4,921,169.10 and 2,087,989.60

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Solution

The fourth proportional to 3,280,779.40, 4,921,169.10 and 2,087,989.60 is: 3,131,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280,779.40 : 4,921,169.10 = 2,087,989.60 : x
  2. Step 2: Convert to fraction form
    3,280,779.40/4,921,169.10 = 2,087,989.60/x
  3. Step 3: Cross multiply
    3,280,779.40x = 4,921,169.10 × 2,087,989.60
  4. Step 4: Simplify right side
    3,280,779.40x = 10,275,349,900,641.36
  5. Step 5: Solve for x
    x = 10,275,349,900,641.36/3,280,779.40
  6. Step 6: Final answer
    x = 3,131,984.40

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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.