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Finding the Fourth Proportional to 618,099.67, 852,880.12 and 360,019.09

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Solution

The fourth proportional to 618,099.67, 852,880.12 and 360,019.09 is: 496,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,099.67 : 852,880.12 = 360,019.09 : x
  2. Step 2: Convert to fraction form
    618,099.67/852,880.12 = 360,019.09/x
  3. Step 3: Cross multiply
    618,099.67x = 852,880.12 × 360,019.09
  4. Step 4: Simplify right side
    618,099.67x = 307,053,122,881.40
  5. Step 5: Solve for x
    x = 307,053,122,881.40/618,099.67
  6. Step 6: Final answer
    x = 496,769.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.