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Finding the Fourth Proportional to 483,311.90, 724,276.65 and 355,958.30

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Solution

The fourth proportional to 483,311.90, 724,276.65 and 355,958.30 is: 533,428.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,311.90 : 724,276.65 = 355,958.30 : x
  2. Step 2: Convert to fraction form
    483,311.90/724,276.65 = 355,958.30/x
  3. Step 3: Cross multiply
    483,311.90x = 724,276.65 × 355,958.30
  4. Step 4: Simplify right side
    483,311.90x = 257,812,285,063.70
  5. Step 5: Solve for x
    x = 257,812,285,063.70/483,311.90
  6. Step 6: Final answer
    x = 533,428.38

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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.