Home / 789,040.60-1,183,560.90-290,339.80

Finding the Fourth Proportional to 789,040.60, 1,183,560.90 and 290,339.80

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Solution

The fourth proportional to 789,040.60, 1,183,560.90 and 290,339.80 is: 435,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,040.60 : 1,183,560.90 = 290,339.80 : x
  2. Step 2: Convert to fraction form
    789,040.60/1,183,560.90 = 290,339.80/x
  3. Step 3: Cross multiply
    789,040.60x = 1,183,560.90 × 290,339.80
  4. Step 4: Simplify right side
    789,040.60x = 343,634,834,993.82
  5. Step 5: Solve for x
    x = 343,634,834,993.82/789,040.60
  6. Step 6: Final answer
    x = 435,509.70

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Half scale
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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.