Home / 1,428,135.40-2,140,708.38-481,178.92

Finding the Fourth Proportional to 1,428,135.40, 2,140,708.38 and 481,178.92

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Solution

The fourth proportional to 1,428,135.40, 2,140,708.38 and 481,178.92 is: 721,264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,135.40 : 2,140,708.38 = 481,178.92 : x
  2. Step 2: Convert to fraction form
    1,428,135.40/2,140,708.38 = 481,178.92/x
  3. Step 3: Cross multiply
    1,428,135.40x = 2,140,708.38 × 481,178.92
  4. Step 4: Simplify right side
    1,428,135.40x = 1,030,063,746,323.35
  5. Step 5: Solve for x
    x = 1,030,063,746,323.35/1,428,135.40
  6. Step 6: Final answer
    x = 721,264.77

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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.