Home / 1,372,395.52-1,889,679.20-1,219,167.04

Finding the Fourth Proportional to 1,372,395.52, 1,889,679.20 and 1,219,167.04

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Solution

The fourth proportional to 1,372,395.52, 1,889,679.20 and 1,219,167.04 is: 1,678,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,395.52 : 1,889,679.20 = 1,219,167.04 : x
  2. Step 2: Convert to fraction form
    1,372,395.52/1,889,679.20 = 1,219,167.04/x
  3. Step 3: Cross multiply
    1,372,395.52x = 1,889,679.20 × 1,219,167.04
  4. Step 4: Simplify right side
    1,372,395.52x = 2,303,834,596,813.57
  5. Step 5: Solve for x
    x = 2,303,834,596,813.57/1,372,395.52
  6. Step 6: Final answer
    x = 1,678,695.80

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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.