Home / 1,391,619.86-2,084,430.55-939,856.53

Finding the Fourth Proportional to 1,391,619.86, 2,084,430.55 and 939,856.53

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Solution

The fourth proportional to 1,391,619.86, 2,084,430.55 and 939,856.53 is: 1,407,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,619.86 : 2,084,430.55 = 939,856.53 : x
  2. Step 2: Convert to fraction form
    1,391,619.86/2,084,430.55 = 939,856.53/x
  3. Step 3: Cross multiply
    1,391,619.86x = 2,084,430.55 × 939,856.53
  4. Step 4: Simplify right side
    1,391,619.86x = 1,959,065,663,748.99
  5. Step 5: Solve for x
    x = 1,959,065,663,748.99/1,391,619.86
  6. Step 6: Final answer
    x = 1,407,759.20

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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.