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Finding the Fourth Proportional to 418,383.48, 623,146.15 and 416,344.44

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Solution

The fourth proportional to 418,383.48, 623,146.15 and 416,344.44 is: 620,109.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,383.48 : 623,146.15 = 416,344.44 : x
  2. Step 2: Convert to fraction form
    418,383.48/623,146.15 = 416,344.44/x
  3. Step 3: Cross multiply
    418,383.48x = 623,146.15 × 416,344.44
  4. Step 4: Simplify right side
    418,383.48x = 259,443,434,859.91
  5. Step 5: Solve for x
    x = 259,443,434,859.91/418,383.48
  6. Step 6: Final answer
    x = 620,109.18

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1.5x scale

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.