Home / 639,329.90-882,389.64-381,223.46

Finding the Fourth Proportional to 639,329.90, 882,389.64 and 381,223.46

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Solution

The fourth proportional to 639,329.90, 882,389.64 and 381,223.46 is: 526,156.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,329.90 : 882,389.64 = 381,223.46 : x
  2. Step 2: Convert to fraction form
    639,329.90/882,389.64 = 381,223.46/x
  3. Step 3: Cross multiply
    639,329.90x = 882,389.64 × 381,223.46
  4. Step 4: Simplify right side
    639,329.90x = 336,387,631,628.95
  5. Step 5: Solve for x
    x = 336,387,631,628.95/639,329.90
  6. Step 6: Final answer
    x = 526,156.58

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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.