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Finding the Fourth Proportional to 639,133.60, 959,314.80 and 323,946.40

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Solution

The fourth proportional to 639,133.60, 959,314.80 and 323,946.40 is: 486,231.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,133.60 : 959,314.80 = 323,946.40 : x
  2. Step 2: Convert to fraction form
    639,133.60/959,314.80 = 323,946.40/x
  3. Step 3: Cross multiply
    639,133.60x = 959,314.80 × 323,946.40
  4. Step 4: Simplify right side
    639,133.60x = 310,766,575,926.72
  5. Step 5: Solve for x
    x = 310,766,575,926.72/639,133.60
  6. Step 6: Final answer
    x = 486,231.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.