Home / 639,767.84-882,879.90-353,307.38

Finding the Fourth Proportional to 639,767.84, 882,879.90 and 353,307.38

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Solution

The fourth proportional to 639,767.84, 882,879.90 and 353,307.38 is: 487,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,767.84 : 882,879.90 = 353,307.38 : x
  2. Step 2: Convert to fraction form
    639,767.84/882,879.90 = 353,307.38/x
  3. Step 3: Cross multiply
    639,767.84x = 882,879.90 × 353,307.38
  4. Step 4: Simplify right side
    639,767.84x = 311,927,984,323.66
  5. Step 5: Solve for x
    x = 311,927,984,323.66/639,767.84
  6. Step 6: Final answer
    x = 487,564.34

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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.