Home / 639,580.74-882,624.15-353,103.18

Finding the Fourth Proportional to 639,580.74, 882,624.15 and 353,103.18

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Solution

The fourth proportional to 639,580.74, 882,624.15 and 353,103.18 is: 487,283.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,580.74 : 882,624.15 = 353,103.18 : x
  2. Step 2: Convert to fraction form
    639,580.74/882,624.15 = 353,103.18/x
  3. Step 3: Cross multiply
    639,580.74x = 882,624.15 × 353,103.18
  4. Step 4: Simplify right side
    639,580.74x = 311,657,394,109.80
  5. Step 5: Solve for x
    x = 311,657,394,109.80/639,580.74
  6. Step 6: Final answer
    x = 487,283.89

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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.