Home / 639,432.72-882,417.24-352,952.88

Finding the Fourth Proportional to 639,432.72, 882,417.24 and 352,952.88

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Solution

The fourth proportional to 639,432.72, 882,417.24 and 352,952.88 is: 487,075.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,432.72 : 882,417.24 = 352,952.88 : x
  2. Step 2: Convert to fraction form
    639,432.72/882,417.24 = 352,952.88/x
  3. Step 3: Cross multiply
    639,432.72x = 882,417.24 × 352,952.88
  4. Step 4: Simplify right side
    639,432.72x = 311,451,706,219.65
  5. Step 5: Solve for x
    x = 311,451,706,219.65/639,432.72
  6. Step 6: Final answer
    x = 487,075.02

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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.