Home / 1,038,530.70-1,557,796.05-639,621.90

Finding the Fourth Proportional to 1,038,530.70, 1,557,796.05 and 639,621.90

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Solution

The fourth proportional to 1,038,530.70, 1,557,796.05 and 639,621.90 is: 959,432.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,530.70 : 1,557,796.05 = 639,621.90 : x
  2. Step 2: Convert to fraction form
    1,038,530.70/1,557,796.05 = 639,621.90/x
  3. Step 3: Cross multiply
    1,038,530.70x = 1,557,796.05 × 639,621.90
  4. Step 4: Simplify right side
    1,038,530.70x = 996,400,469,313.50
  5. Step 5: Solve for x
    x = 996,400,469,313.50/1,038,530.70
  6. Step 6: Final answer
    x = 959,432.85

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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.