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Finding the Fourth Proportional to 906,312, 1,359,379.68 and 275,231.28

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Solution

The fourth proportional to 906,312, 1,359,379.68 and 275,231.28 is: 412,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,312 : 1,359,379.68 = 275,231.28 : x
  2. Step 2: Convert to fraction form
    906,312/1,359,379.68 = 275,231.28/x
  3. Step 3: Cross multiply
    906,312x = 1,359,379.68 × 275,231.28
  4. Step 4: Simplify right side
    906,312x = 374,143,809,332.39
  5. Step 5: Solve for x
    x = 374,143,809,332.39/906,312
  6. Step 6: Final answer
    x = 412,820.10

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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.