Home / 1,686,642.30-2,529,963.45-978,491.70

Finding the Fourth Proportional to 1,686,642.30, 2,529,963.45 and 978,491.70

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Solution

The fourth proportional to 1,686,642.30, 2,529,963.45 and 978,491.70 is: 1,467,737.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,642.30 : 2,529,963.45 = 978,491.70 : x
  2. Step 2: Convert to fraction form
    1,686,642.30/2,529,963.45 = 978,491.70/x
  3. Step 3: Cross multiply
    1,686,642.30x = 2,529,963.45 × 978,491.70
  4. Step 4: Simplify right side
    1,686,642.30x = 2,475,548,237,128.37
  5. Step 5: Solve for x
    x = 2,475,548,237,128.37/1,686,642.30
  6. Step 6: Final answer
    x = 1,467,737.55

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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.