Home / 2,108,779.80-3,163,428.90-688,450.20

Finding the Fourth Proportional to 2,108,779.80, 3,163,428.90 and 688,450.20

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Solution

The fourth proportional to 2,108,779.80, 3,163,428.90 and 688,450.20 is: 1,032,759.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108,779.80 : 3,163,428.90 = 688,450.20 : x
  2. Step 2: Convert to fraction form
    2,108,779.80/3,163,428.90 = 688,450.20/x
  3. Step 3: Cross multiply
    2,108,779.80x = 3,163,428.90 × 688,450.20
  4. Step 4: Simplify right side
    2,108,779.80x = 2,177,863,258,890.78
  5. Step 5: Solve for x
    x = 2,177,863,258,890.78/2,108,779.80
  6. Step 6: Final answer
    x = 1,032,759.92

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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.