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Finding the Fourth Proportional to 418,381.48, 623,143.17 and 416,342.44

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Solution

The fourth proportional to 418,381.48, 623,143.17 and 416,342.44 is: 620,106.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,381.48 : 623,143.17 = 416,342.44 : x
  2. Step 2: Convert to fraction form
    418,381.48/623,143.17 = 416,342.44/x
  3. Step 3: Cross multiply
    418,381.48x = 623,143.17 × 416,342.44
  4. Step 4: Simplify right side
    418,381.48x = 259,440,947,867.14
  5. Step 5: Solve for x
    x = 259,440,947,867.14/418,381.48
  6. Step 6: Final answer
    x = 620,106.20

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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.