Home / 3,989,347.20-5,987,779.20-2,097,446.40

Finding the Fourth Proportional to 3,989,347.20, 5,987,779.20 and 2,097,446.40

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Solution

The fourth proportional to 3,989,347.20, 5,987,779.20 and 2,097,446.40 is: 3,148,145.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989,347.20 : 5,987,779.20 = 2,097,446.40 : x
  2. Step 2: Convert to fraction form
    3,989,347.20/5,987,779.20 = 2,097,446.40/x
  3. Step 3: Cross multiply
    3,989,347.20x = 5,987,779.20 × 2,097,446.40
  4. Step 4: Simplify right side
    3,989,347.20x = 12,559,045,927,034.88
  5. Step 5: Solve for x
    x = 12,559,045,927,034.88/3,989,347.20
  6. Step 6: Final answer
    x = 3,148,145.62

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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.