Home / 1,939,645.40-2,909,709.63-660,154.55

Finding the Fourth Proportional to 1,939,645.40, 2,909,709.63 and 660,154.55

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Solution

The fourth proportional to 1,939,645.40, 2,909,709.63 and 660,154.55 is: 990,314.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939,645.40 : 2,909,709.63 = 660,154.55 : x
  2. Step 2: Convert to fraction form
    1,939,645.40/2,909,709.63 = 660,154.55/x
  3. Step 3: Cross multiply
    1,939,645.40x = 2,909,709.63 × 660,154.55
  4. Step 4: Simplify right side
    1,939,645.40x = 1,920,858,036,874.77
  5. Step 5: Solve for x
    x = 1,920,858,036,874.77/1,939,645.40
  6. Step 6: Final answer
    x = 990,314.02

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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.