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Finding the Fourth Proportional to 626,745.96, 864,962.94 and 354,861.76

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Solution

The fourth proportional to 626,745.96, 864,962.94 and 354,861.76 is: 489,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,745.96 : 864,962.94 = 354,861.76 : x
  2. Step 2: Convert to fraction form
    626,745.96/864,962.94 = 354,861.76/x
  3. Step 3: Cross multiply
    626,745.96x = 864,962.94 × 354,861.76
  4. Step 4: Simplify right side
    626,745.96x = 306,942,271,223.17
  5. Step 5: Solve for x
    x = 306,942,271,223.17/626,745.96
  6. Step 6: Final answer
    x = 489,739.53

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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.