Home / 789,117.60-1,183,676.40-290,416.80

Finding the Fourth Proportional to 789,117.60, 1,183,676.40 and 290,416.80

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Solution

The fourth proportional to 789,117.60, 1,183,676.40 and 290,416.80 is: 435,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,117.60 : 1,183,676.40 = 290,416.80 : x
  2. Step 2: Convert to fraction form
    789,117.60/1,183,676.40 = 290,416.80/x
  3. Step 3: Cross multiply
    789,117.60x = 1,183,676.40 × 290,416.80
  4. Step 4: Simplify right side
    789,117.60x = 343,759,512,323.52
  5. Step 5: Solve for x
    x = 343,759,512,323.52/789,117.60
  6. Step 6: Final answer
    x = 435,625.20

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Double scale
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Similar ratio
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1.5x scale

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.