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Finding the Fourth Proportional to 618,263.15, 853,212.02 and 360,133.49

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Solution

The fourth proportional to 618,263.15, 853,212.02 and 360,133.49 is: 496,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,263.15 : 853,212.02 = 360,133.49 : x
  2. Step 2: Convert to fraction form
    618,263.15/853,212.02 = 360,133.49/x
  3. Step 3: Cross multiply
    618,263.15x = 853,212.02 × 360,133.49
  4. Step 4: Simplify right side
    618,263.15x = 307,270,222,804.91
  5. Step 5: Solve for x
    x = 307,270,222,804.91/618,263.15
  6. Step 6: Final answer
    x = 496,989.39

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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.