Home / 743,770.15-1,026,399.20-404,238.40

Finding the Fourth Proportional to 743,770.15, 1,026,399.20 and 404,238.40

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Solution

The fourth proportional to 743,770.15, 1,026,399.20 and 404,238.40 is: 557,847.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,770.15 : 1,026,399.20 = 404,238.40 : x
  2. Step 2: Convert to fraction form
    743,770.15/1,026,399.20 = 404,238.40/x
  3. Step 3: Cross multiply
    743,770.15x = 1,026,399.20 × 404,238.40
  4. Step 4: Simplify right side
    743,770.15x = 414,909,965,782.09
  5. Step 5: Solve for x
    x = 414,909,965,782.09/743,770.15
  6. Step 6: Final answer
    x = 557,847.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.