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Finding the Fourth Proportional to 886,859.70, 1,330,289.55 and 354,462.90

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Solution

The fourth proportional to 886,859.70, 1,330,289.55 and 354,462.90 is: 531,694.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,859.70 : 1,330,289.55 = 354,462.90 : x
  2. Step 2: Convert to fraction form
    886,859.70/1,330,289.55 = 354,462.90/x
  3. Step 3: Cross multiply
    886,859.70x = 1,330,289.55 × 354,462.90
  4. Step 4: Simplify right side
    886,859.70x = 471,538,291,732.70
  5. Step 5: Solve for x
    x = 471,538,291,732.70/886,859.70
  6. Step 6: Final answer
    x = 531,694.35

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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.