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Finding the Fourth Proportional to 412,718.40, 618,093.45 and 412,718.40

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Solution

The fourth proportional to 412,718.40, 618,093.45 and 412,718.40 is: 618,093.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,718.40 : 618,093.45 = 412,718.40 : x
  2. Step 2: Convert to fraction form
    412,718.40/618,093.45 = 412,718.40/x
  3. Step 3: Cross multiply
    412,718.40x = 618,093.45 × 412,718.40
  4. Step 4: Simplify right side
    412,718.40x = 255,098,539,734.48
  5. Step 5: Solve for x
    x = 255,098,539,734.48/412,718.40
  6. Step 6: Final answer
    x = 618,093.45

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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.