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Finding the Fourth Proportional to 624,150.10, 935,678.40 and 423,820.90

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Solution

The fourth proportional to 624,150.10, 935,678.40 and 423,820.90 is: 635,360.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,150.10 : 935,678.40 = 423,820.90 : x
  2. Step 2: Convert to fraction form
    624,150.10/935,678.40 = 423,820.90/x
  3. Step 3: Cross multiply
    624,150.10x = 935,678.40 × 423,820.90
  4. Step 4: Simplify right side
    624,150.10x = 396,560,061,598.56
  5. Step 5: Solve for x
    x = 396,560,061,598.56/624,150.10
  6. Step 6: Final answer
    x = 635,360.09

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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.