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Finding the Fourth Proportional to 455,882.76, 683,212.89 and 354,802.86

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Solution

The fourth proportional to 455,882.76, 683,212.89 and 354,802.86 is: 531,728.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,882.76 : 683,212.89 = 354,802.86 : x
  2. Step 2: Convert to fraction form
    455,882.76/683,212.89 = 354,802.86/x
  3. Step 3: Cross multiply
    455,882.76x = 683,212.89 × 354,802.86
  4. Step 4: Simplify right side
    455,882.76x = 242,405,887,360.87
  5. Step 5: Solve for x
    x = 242,405,887,360.87/455,882.76
  6. Step 6: Final answer
    x = 531,728.57

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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.