Home / 627,013.22-865,279.90-368,899.89

Finding the Fourth Proportional to 627,013.22, 865,279.90 and 368,899.89

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Solution

The fourth proportional to 627,013.22, 865,279.90 and 368,899.89 is: 509,082.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,013.22 : 865,279.90 = 368,899.89 : x
  2. Step 2: Convert to fraction form
    627,013.22/865,279.90 = 368,899.89/x
  3. Step 3: Cross multiply
    627,013.22x = 865,279.90 × 368,899.89
  4. Step 4: Simplify right side
    627,013.22x = 319,201,659,929.21
  5. Step 5: Solve for x
    x = 319,201,659,929.21/627,013.22
  6. Step 6: Final answer
    x = 509,082.82

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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.