Home / 831,818.90-1,247,728.04-326,617.58

Finding the Fourth Proportional to 831,818.90, 1,247,728.04 and 326,617.58

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Solution

The fourth proportional to 831,818.90, 1,247,728.04 and 326,617.58 is: 489,926.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,818.90 : 1,247,728.04 = 326,617.58 : x
  2. Step 2: Convert to fraction form
    831,818.90/1,247,728.04 = 326,617.58/x
  3. Step 3: Cross multiply
    831,818.90x = 1,247,728.04 × 326,617.58
  4. Step 4: Simplify right side
    831,818.90x = 407,529,912,922.94
  5. Step 5: Solve for x
    x = 407,529,912,922.94/831,818.90
  6. Step 6: Final answer
    x = 489,926.25

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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.