Home / 1,690,923.78-2,535,648.39-639,562.50

Finding the Fourth Proportional to 1,690,923.78, 2,535,648.39 and 639,562.50

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Solution

The fourth proportional to 1,690,923.78, 2,535,648.39 and 639,562.50 is: 959,064.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,923.78 : 2,535,648.39 = 639,562.50 : x
  2. Step 2: Convert to fraction form
    1,690,923.78/2,535,648.39 = 639,562.50/x
  3. Step 3: Cross multiply
    1,690,923.78x = 2,535,648.39 × 639,562.50
  4. Step 4: Simplify right side
    1,690,923.78x = 1,621,705,623,429.38
  5. Step 5: Solve for x
    x = 1,621,705,623,429.38/1,690,923.78
  6. Step 6: Final answer
    x = 959,064.89

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1.5x scale

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.