Home / 677,905.78-935,505.30-376,099.78

Finding the Fourth Proportional to 677,905.78, 935,505.30 and 376,099.78

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Solution

The fourth proportional to 677,905.78, 935,505.30 and 376,099.78 is: 519,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,905.78 : 935,505.30 = 376,099.78 : x
  2. Step 2: Convert to fraction form
    677,905.78/935,505.30 = 376,099.78/x
  3. Step 3: Cross multiply
    677,905.78x = 935,505.30 × 376,099.78
  4. Step 4: Simplify right side
    677,905.78x = 351,843,337,518.83
  5. Step 5: Solve for x
    x = 351,843,337,518.83/677,905.78
  6. Step 6: Final answer
    x = 519,015.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.