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Finding the Fourth Proportional to 639,525.60, 882,522 and 353,044.80

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Solution

The fourth proportional to 639,525.60, 882,522 and 353,044.80 is: 487,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,525.60 : 882,522 = 353,044.80 : x
  2. Step 2: Convert to fraction form
    639,525.60/882,522 = 353,044.80/x
  3. Step 3: Cross multiply
    639,525.60x = 882,522 × 353,044.80
  4. Step 4: Simplify right side
    639,525.60x = 311,569,802,985.60
  5. Step 5: Solve for x
    x = 311,569,802,985.60/639,525.60
  6. Step 6: Final answer
    x = 487,188.95

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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.