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Finding the Fourth Proportional to 496,015.70, 744,023.55 and 318,868.70

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Solution

The fourth proportional to 496,015.70, 744,023.55 and 318,868.70 is: 478,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,015.70 : 744,023.55 = 318,868.70 : x
  2. Step 2: Convert to fraction form
    496,015.70/744,023.55 = 318,868.70/x
  3. Step 3: Cross multiply
    496,015.70x = 744,023.55 × 318,868.70
  4. Step 4: Simplify right side
    496,015.70x = 237,245,822,157.89
  5. Step 5: Solve for x
    x = 237,245,822,157.89/496,015.70
  6. Step 6: Final answer
    x = 478,303.05

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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.