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Finding the Fourth Proportional to 601,286.40, 901,929.60 and 321,350.40

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Solution

The fourth proportional to 601,286.40, 901,929.60 and 321,350.40 is: 482,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    601,286.40 : 901,929.60 = 321,350.40 : x
  2. Step 2: Convert to fraction form
    601,286.40/901,929.60 = 321,350.40/x
  3. Step 3: Cross multiply
    601,286.40x = 901,929.60 × 321,350.40
  4. Step 4: Simplify right side
    601,286.40x = 289,835,437,731.84
  5. Step 5: Solve for x
    x = 289,835,437,731.84/601,286.40
  6. Step 6: Final answer
    x = 482,025.60

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Half scale
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Double scale
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Similar ratio
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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.