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Finding the Fourth Proportional to 928,996.62, 1,393,160.80 and 321,620.01

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Solution

The fourth proportional to 928,996.62, 1,393,160.80 and 321,620.01 is: 482,314.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,996.62 : 1,393,160.80 = 321,620.01 : x
  2. Step 2: Convert to fraction form
    928,996.62/1,393,160.80 = 321,620.01/x
  3. Step 3: Cross multiply
    928,996.62x = 1,393,160.80 × 321,620.01
  4. Step 4: Simplify right side
    928,996.62x = 448,068,390,427.61
  5. Step 5: Solve for x
    x = 448,068,390,427.61/928,996.62
  6. Step 6: Final answer
    x = 482,314.34

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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.