Home / 2,128,682.40-3,193,898.40-781,490.40

Finding the Fourth Proportional to 2,128,682.40, 3,193,898.40 and 781,490.40

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Solution

The fourth proportional to 2,128,682.40, 3,193,898.40 and 781,490.40 is: 1,172,556.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,682.40 : 3,193,898.40 = 781,490.40 : x
  2. Step 2: Convert to fraction form
    2,128,682.40/3,193,898.40 = 781,490.40/x
  3. Step 3: Cross multiply
    2,128,682.40x = 3,193,898.40 × 781,490.40
  4. Step 4: Simplify right side
    2,128,682.40x = 2,496,000,938,175.36
  5. Step 5: Solve for x
    x = 2,496,000,938,175.36/2,128,682.40
  6. Step 6: Final answer
    x = 1,172,556.76

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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.