Home / 831,680.27-1,147,436.85-678,453.58

Finding the Fourth Proportional to 831,680.27, 1,147,436.85 and 678,453.58

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Solution

The fourth proportional to 831,680.27, 1,147,436.85 and 678,453.58 is: 936,035.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,680.27 : 1,147,436.85 = 678,453.58 : x
  2. Step 2: Convert to fraction form
    831,680.27/1,147,436.85 = 678,453.58/x
  3. Step 3: Cross multiply
    831,680.27x = 1,147,436.85 × 678,453.58
  4. Step 4: Simplify right side
    831,680.27x = 778,482,638,706.42
  5. Step 5: Solve for x
    x = 778,482,638,706.42/831,680.27
  6. Step 6: Final answer
    x = 936,035.96

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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.