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Finding the Fourth Proportional to 886,900.80, 1,330,351.20 and 381,703.80

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Solution

The fourth proportional to 886,900.80, 1,330,351.20 and 381,703.80 is: 572,555.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,900.80 : 1,330,351.20 = 381,703.80 : x
  2. Step 2: Convert to fraction form
    886,900.80/1,330,351.20 = 381,703.80/x
  3. Step 3: Cross multiply
    886,900.80x = 1,330,351.20 × 381,703.80
  4. Step 4: Simplify right side
    886,900.80x = 507,800,108,374.56
  5. Step 5: Solve for x
    x = 507,800,108,374.56/886,900.80
  6. Step 6: Final answer
    x = 572,555.70

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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.