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Finding the Fourth Proportional to 389,567.51, 585,287.69 and 368,060.79

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Solution

The fourth proportional to 389,567.51, 585,287.69 and 368,060.79 is: 552,975.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,567.51 : 585,287.69 = 368,060.79 : x
  2. Step 2: Convert to fraction form
    389,567.51/585,287.69 = 368,060.79/x
  3. Step 3: Cross multiply
    389,567.51x = 585,287.69 × 368,060.79
  4. Step 4: Simplify right side
    389,567.51x = 215,421,449,558.68
  5. Step 5: Solve for x
    x = 215,421,449,558.68/389,567.51
  6. Step 6: Final answer
    x = 552,975.91

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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.