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Finding the Fourth Proportional to 418,845.08, 623,530.40 and 416,354

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Solution

The fourth proportional to 418,845.08, 623,530.40 and 416,354 is: 619,821.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,845.08 : 623,530.40 = 416,354 : x
  2. Step 2: Convert to fraction form
    418,845.08/623,530.40 = 416,354/x
  3. Step 3: Cross multiply
    418,845.08x = 623,530.40 × 416,354
  4. Step 4: Simplify right side
    418,845.08x = 259,609,376,161.60
  5. Step 5: Solve for x
    x = 259,609,376,161.60/418,845.08
  6. Step 6: Final answer
    x = 619,821.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.