Home / 1,436,428.80-2,155,157.28-615,422.88

Finding the Fourth Proportional to 1,436,428.80, 2,155,157.28 and 615,422.88

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Solution

The fourth proportional to 1,436,428.80, 2,155,157.28 and 615,422.88 is: 923,354.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436,428.80 : 2,155,157.28 = 615,422.88 : x
  2. Step 2: Convert to fraction form
    1,436,428.80/2,155,157.28 = 615,422.88/x
  3. Step 3: Cross multiply
    1,436,428.80x = 2,155,157.28 × 615,422.88
  4. Step 4: Simplify right side
    1,436,428.80x = 1,326,333,100,110.57
  5. Step 5: Solve for x
    x = 1,326,333,100,110.57/1,436,428.80
  6. Step 6: Final answer
    x = 923,354.57

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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.