Home / 389,780.10-585,107.55-301,425.30

Finding the Fourth Proportional to 389,780.10, 585,107.55 and 301,425.30

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Solution

The fourth proportional to 389,780.10, 585,107.55 and 301,425.30 is: 452,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,780.10 : 585,107.55 = 301,425.30 : x
  2. Step 2: Convert to fraction form
    389,780.10/585,107.55 = 301,425.30/x
  3. Step 3: Cross multiply
    389,780.10x = 585,107.55 × 301,425.30
  4. Step 4: Simplify right side
    389,780.10x = 176,366,218,791.02
  5. Step 5: Solve for x
    x = 176,366,218,791.02/389,780.10
  6. Step 6: Final answer
    x = 452,476.20

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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.