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Finding the Fourth Proportional to 1,301,208.62, 1,795,453.62 and 817,431.17

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Solution

The fourth proportional to 1,301,208.62, 1,795,453.62 and 817,431.17 is: 1,127,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301,208.62 : 1,795,453.62 = 817,431.17 : x
  2. Step 2: Convert to fraction form
    1,301,208.62/1,795,453.62 = 817,431.17/x
  3. Step 3: Cross multiply
    1,301,208.62x = 1,795,453.62 × 817,431.17
  4. Step 4: Simplify right side
    1,301,208.62x = 1,467,659,744,300.07
  5. Step 5: Solve for x
    x = 1,467,659,744,300.07/1,301,208.62
  6. Step 6: Final answer
    x = 1,127,920.40

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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.