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Finding the Fourth Proportional to 412,218.80, 618,328.20 and 412,218.80

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Solution

The fourth proportional to 412,218.80, 618,328.20 and 412,218.80 is: 618,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,218.80 : 618,328.20 = 412,218.80 : x
  2. Step 2: Convert to fraction form
    412,218.80/618,328.20 = 412,218.80/x
  3. Step 3: Cross multiply
    412,218.80x = 618,328.20 × 412,218.80
  4. Step 4: Simplify right side
    412,218.80x = 254,886,508,610.16
  5. Step 5: Solve for x
    x = 254,886,508,610.16/412,218.80
  6. Step 6: Final answer
    x = 618,328.20

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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.