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Finding the Fourth Proportional to 1,270,855, 1,754,173.56 and 818,146

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Solution

The fourth proportional to 1,270,855, 1,754,173.56 and 818,146 is: 1,129,294.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,855 : 1,754,173.56 = 818,146 : x
  2. Step 2: Convert to fraction form
    1,270,855/1,754,173.56 = 818,146/x
  3. Step 3: Cross multiply
    1,270,855x = 1,754,173.56 × 818,146
  4. Step 4: Simplify right side
    1,270,855x = 1,435,170,081,419.76
  5. Step 5: Solve for x
    x = 1,435,170,081,419.76/1,270,855
  6. Step 6: Final answer
    x = 1,129,294.91

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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.