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Finding the Fourth Proportional to 526,403.10, 789,604.78 and 147,379.67

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Solution

The fourth proportional to 526,403.10, 789,604.78 and 147,379.67 is: 221,069.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,403.10 : 789,604.78 = 147,379.67 : x
  2. Step 2: Convert to fraction form
    526,403.10/789,604.78 = 147,379.67/x
  3. Step 3: Cross multiply
    526,403.10x = 789,604.78 × 147,379.67
  4. Step 4: Simplify right side
    526,403.10x = 116,371,693,512.39
  5. Step 5: Solve for x
    x = 116,371,693,512.39/526,403.10
  6. Step 6: Final answer
    x = 221,069.54

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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.