Home / 1,119,139.40-1,679,170.26-821,139.32

Finding the Fourth Proportional to 1,119,139.40, 1,679,170.26 and 821,139.32

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Solution

The fourth proportional to 1,119,139.40, 1,679,170.26 and 821,139.32 is: 1,232,047.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,139.40 : 1,679,170.26 = 821,139.32 : x
  2. Step 2: Convert to fraction form
    1,119,139.40/1,679,170.26 = 821,139.32/x
  3. Step 3: Cross multiply
    1,119,139.40x = 1,679,170.26 × 821,139.32
  4. Step 4: Simplify right side
    1,119,139.40x = 1,378,832,725,460.62
  5. Step 5: Solve for x
    x = 1,378,832,725,460.62/1,119,139.40
  6. Step 6: Final answer
    x = 1,232,047.34

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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.