Home / 1,188,017.80-1,779,402.30-920,912.20

Finding the Fourth Proportional to 1,188,017.80, 1,779,402.30 and 920,912.20

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Solution

The fourth proportional to 1,188,017.80, 1,779,402.30 and 920,912.20 is: 1,379,333.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,017.80 : 1,779,402.30 = 920,912.20 : x
  2. Step 2: Convert to fraction form
    1,188,017.80/1,779,402.30 = 920,912.20/x
  3. Step 3: Cross multiply
    1,188,017.80x = 1,779,402.30 × 920,912.20
  4. Step 4: Simplify right side
    1,188,017.80x = 1,638,673,286,778.06
  5. Step 5: Solve for x
    x = 1,638,673,286,778.06/1,188,017.80
  6. Step 6: Final answer
    x = 1,379,333.95

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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.