Home / 677,628.10-935,156.10-405,643.38

Finding the Fourth Proportional to 677,628.10, 935,156.10 and 405,643.38

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Solution

The fourth proportional to 677,628.10, 935,156.10 and 405,643.38 is: 559,805.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,628.10 : 935,156.10 = 405,643.38 : x
  2. Step 2: Convert to fraction form
    677,628.10/935,156.10 = 405,643.38/x
  3. Step 3: Cross multiply
    677,628.10x = 935,156.10 × 405,643.38
  4. Step 4: Simplify right side
    677,628.10x = 379,339,881,231.62
  5. Step 5: Solve for x
    x = 379,339,881,231.62/677,628.10
  6. Step 6: Final answer
    x = 559,805.42

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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.