Home / 789,490.76-1,089,496.44-426,913.70

Finding the Fourth Proportional to 789,490.76, 1,089,496.44 and 426,913.70

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Solution

The fourth proportional to 789,490.76, 1,089,496.44 and 426,913.70 is: 589,140.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,490.76 : 1,089,496.44 = 426,913.70 : x
  2. Step 2: Convert to fraction form
    789,490.76/1,089,496.44 = 426,913.70/x
  3. Step 3: Cross multiply
    789,490.76x = 1,089,496.44 × 426,913.70
  4. Step 4: Simplify right side
    789,490.76x = 465,120,956,337.23
  5. Step 5: Solve for x
    x = 465,120,956,337.23/789,490.76
  6. Step 6: Final answer
    x = 589,140.47

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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.