Home / 859,918.74-1,290,396.51-299,346.90

Finding the Fourth Proportional to 859,918.74, 1,290,396.51 and 299,346.90

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Solution

The fourth proportional to 859,918.74, 1,290,396.51 and 299,346.90 is: 449,200.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,918.74 : 1,290,396.51 = 299,346.90 : x
  2. Step 2: Convert to fraction form
    859,918.74/1,290,396.51 = 299,346.90/x
  3. Step 3: Cross multiply
    859,918.74x = 1,290,396.51 × 299,346.90
  4. Step 4: Simplify right side
    859,918.74x = 386,276,195,039.32
  5. Step 5: Solve for x
    x = 386,276,195,039.32/859,918.74
  6. Step 6: Final answer
    x = 449,200.81

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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.