Home / 789,206.12-1,089,103-426,630.20

Finding the Fourth Proportional to 789,206.12, 1,089,103 and 426,630.20

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Solution

The fourth proportional to 789,206.12, 1,089,103 and 426,630.20 is: 588,748.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,206.12 : 1,089,103 = 426,630.20 : x
  2. Step 2: Convert to fraction form
    789,206.12/1,089,103 = 426,630.20/x
  3. Step 3: Cross multiply
    789,206.12x = 1,089,103 × 426,630.20
  4. Step 4: Simplify right side
    789,206.12x = 464,644,230,710.60
  5. Step 5: Solve for x
    x = 464,644,230,710.60/789,206.12
  6. Step 6: Final answer
    x = 588,748.89

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.