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Finding the Fourth Proportional to 490,834.32, 735,499.95 and 330,315.18

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Solution

The fourth proportional to 490,834.32, 735,499.95 and 330,315.18 is: 494,967.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,834.32 : 735,499.95 = 330,315.18 : x
  2. Step 2: Convert to fraction form
    490,834.32/735,499.95 = 330,315.18/x
  3. Step 3: Cross multiply
    490,834.32x = 735,499.95 × 330,315.18
  4. Step 4: Simplify right side
    490,834.32x = 242,946,798,374.24
  5. Step 5: Solve for x
    x = 242,946,798,374.24/490,834.32
  6. Step 6: Final answer
    x = 494,967.02

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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.