Home / 677,683.31-935,045.96-405,647.78

Finding the Fourth Proportional to 677,683.31, 935,045.96 and 405,647.78

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Solution

The fourth proportional to 677,683.31, 935,045.96 and 405,647.78 is: 559,699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,683.31 : 935,045.96 = 405,647.78 : x
  2. Step 2: Convert to fraction form
    677,683.31/935,045.96 = 405,647.78/x
  3. Step 3: Cross multiply
    677,683.31x = 935,045.96 × 405,647.78
  4. Step 4: Simplify right side
    677,683.31x = 379,299,311,168.50
  5. Step 5: Solve for x
    x = 379,299,311,168.50/677,683.31
  6. Step 6: Final answer
    x = 559,699.95

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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.