Home / 1,115,316.40-1,671,131.40-949,428.40

Finding the Fourth Proportional to 1,115,316.40, 1,671,131.40 and 949,428.40

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Solution

The fourth proportional to 1,115,316.40, 1,671,131.40 and 949,428.40 is: 1,422,573.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,316.40 : 1,671,131.40 = 949,428.40 : x
  2. Step 2: Convert to fraction form
    1,115,316.40/1,671,131.40 = 949,428.40/x
  3. Step 3: Cross multiply
    1,115,316.40x = 1,671,131.40 × 949,428.40
  4. Step 4: Simplify right side
    1,115,316.40x = 1,586,619,611,291.76
  5. Step 5: Solve for x
    x = 1,586,619,611,291.76/1,115,316.40
  6. Step 6: Final answer
    x = 1,422,573.55

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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.