Home / 764,584.17-1,055,156.54-420,448.31

Finding the Fourth Proportional to 764,584.17, 1,055,156.54 and 420,448.31

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Solution

The fourth proportional to 764,584.17, 1,055,156.54 and 420,448.31 is: 580,235.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,584.17 : 1,055,156.54 = 420,448.31 : x
  2. Step 2: Convert to fraction form
    764,584.17/1,055,156.54 = 420,448.31/x
  3. Step 3: Cross multiply
    764,584.17x = 1,055,156.54 × 420,448.31
  4. Step 4: Simplify right side
    764,584.17x = 443,638,776,650.42
  5. Step 5: Solve for x
    x = 443,638,776,650.42/764,584.17
  6. Step 6: Final answer
    x = 580,235.37

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Double scale
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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.