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Finding the Fourth Proportional to 555,321.93, 765,954.54 and 340,547.60

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Solution

The fourth proportional to 555,321.93, 765,954.54 and 340,547.60 is: 469,716.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,321.93 : 765,954.54 = 340,547.60 : x
  2. Step 2: Convert to fraction form
    555,321.93/765,954.54 = 340,547.60/x
  3. Step 3: Cross multiply
    555,321.93x = 765,954.54 × 340,547.60
  4. Step 4: Simplify right side
    555,321.93x = 260,843,976,476.33
  5. Step 5: Solve for x
    x = 260,843,976,476.33/555,321.93
  6. Step 6: Final answer
    x = 469,716.69

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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.