Home / 639,521.10-882,515.79-353,040.30

Finding the Fourth Proportional to 639,521.10, 882,515.79 and 353,040.30

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Solution

The fourth proportional to 639,521.10, 882,515.79 and 353,040.30 is: 487,182.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,521.10 : 882,515.79 = 353,040.30 : x
  2. Step 2: Convert to fraction form
    639,521.10/882,515.79 = 353,040.30/x
  3. Step 3: Cross multiply
    639,521.10x = 882,515.79 × 353,040.30
  4. Step 4: Simplify right side
    639,521.10x = 311,563,639,256.34
  5. Step 5: Solve for x
    x = 311,563,639,256.34/639,521.10
  6. Step 6: Final answer
    x = 487,182.74

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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.