Home / 831,920.40-1,247,880.60-270,954.90

Finding the Fourth Proportional to 831,920.40, 1,247,880.60 and 270,954.90

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Solution

The fourth proportional to 831,920.40, 1,247,880.60 and 270,954.90 is: 406,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,920.40 : 1,247,880.60 = 270,954.90 : x
  2. Step 2: Convert to fraction form
    831,920.40/1,247,880.60 = 270,954.90/x
  3. Step 3: Cross multiply
    831,920.40x = 1,247,880.60 × 270,954.90
  4. Step 4: Simplify right side
    831,920.40x = 338,119,363,184.94
  5. Step 5: Solve for x
    x = 338,119,363,184.94/831,920.40
  6. Step 6: Final answer
    x = 406,432.35

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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.