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Finding the Fourth Proportional to 867,219.84, 1,196,796.94 and 485,238.42

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Solution

The fourth proportional to 867,219.84, 1,196,796.94 and 485,238.42 is: 669,647.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,219.84 : 1,196,796.94 = 485,238.42 : x
  2. Step 2: Convert to fraction form
    867,219.84/1,196,796.94 = 485,238.42/x
  3. Step 3: Cross multiply
    867,219.84x = 1,196,796.94 × 485,238.42
  4. Step 4: Simplify right side
    867,219.84x = 580,731,855,013.34
  5. Step 5: Solve for x
    x = 580,731,855,013.34/867,219.84
  6. Step 6: Final answer
    x = 669,647.80

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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.