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Finding the Fourth Proportional to 455,910.45, 683,254.32 and 354,830.55

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Solution

The fourth proportional to 455,910.45, 683,254.32 and 354,830.55 is: 531,770.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,910.45 : 683,254.32 = 354,830.55 : x
  2. Step 2: Convert to fraction form
    455,910.45/683,254.32 = 354,830.55/x
  3. Step 3: Cross multiply
    455,910.45x = 683,254.32 × 354,830.55
  4. Step 4: Simplify right side
    455,910.45x = 242,439,506,155.48
  5. Step 5: Solve for x
    x = 242,439,506,155.48/455,910.45
  6. Step 6: Final answer
    x = 531,770.01

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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.