Home / 745,271.20-1,028,388.54-422,917.12

Finding the Fourth Proportional to 745,271.20, 1,028,388.54 and 422,917.12

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Solution

The fourth proportional to 745,271.20, 1,028,388.54 and 422,917.12 is: 583,576.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,271.20 : 1,028,388.54 = 422,917.12 : x
  2. Step 2: Convert to fraction form
    745,271.20/1,028,388.54 = 422,917.12/x
  3. Step 3: Cross multiply
    745,271.20x = 1,028,388.54 × 422,917.12
  4. Step 4: Simplify right side
    745,271.20x = 434,923,119,577.81
  5. Step 5: Solve for x
    x = 434,923,119,577.81/745,271.20
  6. Step 6: Final answer
    x = 583,576.98

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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.