Home / 677,629.10-935,157.48-405,644.36

Finding the Fourth Proportional to 677,629.10, 935,157.48 and 405,644.36

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Solution

The fourth proportional to 677,629.10, 935,157.48 and 405,644.36 is: 559,806.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,629.10 : 935,157.48 = 405,644.36 : x
  2. Step 2: Convert to fraction form
    677,629.10/935,157.48 = 405,644.36/x
  3. Step 3: Cross multiply
    677,629.10x = 935,157.48 × 405,644.36
  4. Step 4: Simplify right side
    677,629.10x = 379,341,357,473.81
  5. Step 5: Solve for x
    x = 379,341,357,473.81/677,629.10
  6. Step 6: Final answer
    x = 559,806.77

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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.