Home / 745,271.92-1,028,468.76-405,739.36

Finding the Fourth Proportional to 745,271.92, 1,028,468.76 and 405,739.36

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Solution

The fourth proportional to 745,271.92, 1,028,468.76 and 405,739.36 is: 559,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,271.92 : 1,028,468.76 = 405,739.36 : x
  2. Step 2: Convert to fraction form
    745,271.92/1,028,468.76 = 405,739.36/x
  3. Step 3: Cross multiply
    745,271.92x = 1,028,468.76 × 405,739.36
  4. Step 4: Simplify right side
    745,271.92x = 417,290,256,462.39
  5. Step 5: Solve for x
    x = 417,290,256,462.39/745,271.92
  6. Step 6: Final answer
    x = 559,916.78

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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.