Home / 745,271.42-1,028,468.07-405,738.86

Finding the Fourth Proportional to 745,271.42, 1,028,468.07 and 405,738.86

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Solution

The fourth proportional to 745,271.42, 1,028,468.07 and 405,738.86 is: 559,916.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,271.42 : 1,028,468.07 = 405,738.86 : x
  2. Step 2: Convert to fraction form
    745,271.42/1,028,468.07 = 405,738.86/x
  3. Step 3: Cross multiply
    745,271.42x = 1,028,468.07 × 405,738.86
  4. Step 4: Simplify right side
    745,271.42x = 417,289,462,268.20
  5. Step 5: Solve for x
    x = 417,289,462,268.20/745,271.42
  6. Step 6: Final answer
    x = 559,916.09

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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.