Home / 831,343.20-1,247,014.80-298,881.60

Finding the Fourth Proportional to 831,343.20, 1,247,014.80 and 298,881.60

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Solution

The fourth proportional to 831,343.20, 1,247,014.80 and 298,881.60 is: 448,322.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,343.20 : 1,247,014.80 = 298,881.60 : x
  2. Step 2: Convert to fraction form
    831,343.20/1,247,014.80 = 298,881.60/x
  3. Step 3: Cross multiply
    831,343.20x = 1,247,014.80 × 298,881.60
  4. Step 4: Simplify right side
    831,343.20x = 372,709,778,647.68
  5. Step 5: Solve for x
    x = 372,709,778,647.68/831,343.20
  6. Step 6: Final answer
    x = 448,322.40

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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.