Home / 639,491.98-882,498.06-353,011.38

Finding the Fourth Proportional to 639,491.98, 882,498.06 and 353,011.38

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Solution

The fourth proportional to 639,491.98, 882,498.06 and 353,011.38 is: 487,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,491.98 : 882,498.06 = 353,011.38 : x
  2. Step 2: Convert to fraction form
    639,491.98/882,498.06 = 353,011.38/x
  3. Step 3: Cross multiply
    639,491.98x = 882,498.06 × 353,011.38
  4. Step 4: Simplify right side
    639,491.98x = 311,531,858,007.92
  5. Step 5: Solve for x
    x = 311,531,858,007.92/639,491.98
  6. Step 6: Final answer
    x = 487,155.22

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1.5x scale

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.