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Finding the Fourth Proportional to 389,565.51, 585,284.69 and 368,058.79

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Solution

The fourth proportional to 389,565.51, 585,284.69 and 368,058.79 is: 552,972.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,565.51 : 585,284.69 = 368,058.79 : x
  2. Step 2: Convert to fraction form
    389,565.51/585,284.69 = 368,058.79/x
  3. Step 3: Cross multiply
    389,565.51x = 585,284.69 × 368,058.79
  4. Step 4: Simplify right side
    389,565.51x = 215,419,172,966.63
  5. Step 5: Solve for x
    x = 215,419,172,966.63/389,565.51
  6. Step 6: Final answer
    x = 552,972.92

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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.