Home / 1,089,128.40-1,633,692.60-668,641.20

Finding the Fourth Proportional to 1,089,128.40, 1,633,692.60 and 668,641.20

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Solution

The fourth proportional to 1,089,128.40, 1,633,692.60 and 668,641.20 is: 1,002,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,128.40 : 1,633,692.60 = 668,641.20 : x
  2. Step 2: Convert to fraction form
    1,089,128.40/1,633,692.60 = 668,641.20/x
  3. Step 3: Cross multiply
    1,089,128.40x = 1,633,692.60 × 668,641.20
  4. Step 4: Simplify right side
    1,089,128.40x = 1,092,354,180,495.12
  5. Step 5: Solve for x
    x = 1,092,354,180,495.12/1,089,128.40
  6. Step 6: Final answer
    x = 1,002,961.80

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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.