Home / 2,119,020.90-3,178,385.55-679,683.30

Finding the Fourth Proportional to 2,119,020.90, 3,178,385.55 and 679,683.30

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Solution

The fourth proportional to 2,119,020.90, 3,178,385.55 and 679,683.30 is: 1,019,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119,020.90 : 3,178,385.55 = 679,683.30 : x
  2. Step 2: Convert to fraction form
    2,119,020.90/3,178,385.55 = 679,683.30/x
  3. Step 3: Cross multiply
    2,119,020.90x = 3,178,385.55 × 679,683.30
  4. Step 4: Simplify right side
    2,119,020.90x = 2,160,295,579,296.32
  5. Step 5: Solve for x
    x = 2,160,295,579,296.32/2,119,020.90
  6. Step 6: Final answer
    x = 1,019,478.18

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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.