Home / 639,739.52-882,847.68-353,259.20

Finding the Fourth Proportional to 639,739.52, 882,847.68 and 353,259.20

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Solution

The fourth proportional to 639,739.52, 882,847.68 and 353,259.20 is: 487,501.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,739.52 : 882,847.68 = 353,259.20 : x
  2. Step 2: Convert to fraction form
    639,739.52/882,847.68 = 353,259.20/x
  3. Step 3: Cross multiply
    639,739.52x = 882,847.68 × 353,259.20
  4. Step 4: Simplify right side
    639,739.52x = 311,874,065,158.66
  5. Step 5: Solve for x
    x = 311,874,065,158.66/639,739.52
  6. Step 6: Final answer
    x = 487,501.64

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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.