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Finding the Fourth Proportional to 412,811.70, 619,217.55 and 412,811.70

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Solution

The fourth proportional to 412,811.70, 619,217.55 and 412,811.70 is: 619,217.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,811.70 : 619,217.55 = 412,811.70 : x
  2. Step 2: Convert to fraction form
    412,811.70/619,217.55 = 412,811.70/x
  3. Step 3: Cross multiply
    412,811.70x = 619,217.55 × 412,811.70
  4. Step 4: Simplify right side
    412,811.70x = 255,620,249,485.34
  5. Step 5: Solve for x
    x = 255,620,249,485.34/412,811.70
  6. Step 6: Final answer
    x = 619,217.55

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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.