Home / 859,909.99-1,290,383.40-299,338.15

Finding the Fourth Proportional to 859,909.99, 1,290,383.40 and 299,338.15

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Solution

The fourth proportional to 859,909.99, 1,290,383.40 and 299,338.15 is: 449,187.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,909.99 : 1,290,383.40 = 299,338.15 : x
  2. Step 2: Convert to fraction form
    859,909.99/1,290,383.40 = 299,338.15/x
  3. Step 3: Cross multiply
    859,909.99x = 1,290,383.40 × 299,338.15
  4. Step 4: Simplify right side
    859,909.99x = 386,260,979,746.71
  5. Step 5: Solve for x
    x = 386,260,979,746.71/859,909.99
  6. Step 6: Final answer
    x = 449,187.69

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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.