Home / 2,119,021.40-3,178,386.30-679,683.80

Finding the Fourth Proportional to 2,119,021.40, 3,178,386.30 and 679,683.80

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Solution

The fourth proportional to 2,119,021.40, 3,178,386.30 and 679,683.80 is: 1,019,478.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119,021.40 : 3,178,386.30 = 679,683.80 : x
  2. Step 2: Convert to fraction form
    2,119,021.40/3,178,386.30 = 679,683.80/x
  3. Step 3: Cross multiply
    2,119,021.40x = 3,178,386.30 × 679,683.80
  4. Step 4: Simplify right side
    2,119,021.40x = 2,160,297,678,251.94
  5. Step 5: Solve for x
    x = 2,160,297,678,251.94/2,119,021.40
  6. Step 6: Final answer
    x = 1,019,478.93

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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.