Home / 1,428,240.16-2,140,865.28-481,283.68

Finding the Fourth Proportional to 1,428,240.16, 2,140,865.28 and 481,283.68

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Solution

The fourth proportional to 1,428,240.16, 2,140,865.28 and 481,283.68 is: 721,421.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,240.16 : 2,140,865.28 = 481,283.68 : x
  2. Step 2: Convert to fraction form
    1,428,240.16/2,140,865.28 = 481,283.68/x
  3. Step 3: Cross multiply
    1,428,240.16x = 2,140,865.28 × 481,283.68
  4. Step 4: Simplify right side
    1,428,240.16x = 1,030,363,520,342.63
  5. Step 5: Solve for x
    x = 1,030,363,520,342.63/1,428,240.16
  6. Step 6: Final answer
    x = 721,421.75

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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.