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Finding the Fourth Proportional to 648,951.70, 973,427.55 and 383,231.20

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Solution

The fourth proportional to 648,951.70, 973,427.55 and 383,231.20 is: 574,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,951.70 : 973,427.55 = 383,231.20 : x
  2. Step 2: Convert to fraction form
    648,951.70/973,427.55 = 383,231.20/x
  3. Step 3: Cross multiply
    648,951.70x = 973,427.55 × 383,231.20
  4. Step 4: Simplify right side
    648,951.70x = 373,047,808,099.56
  5. Step 5: Solve for x
    x = 373,047,808,099.56/648,951.70
  6. Step 6: Final answer
    x = 574,846.80

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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.