Home / 745,028.50-1,028,139.33-405,499.18

Finding the Fourth Proportional to 745,028.50, 1,028,139.33 and 405,499.18

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Solution

The fourth proportional to 745,028.50, 1,028,139.33 and 405,499.18 is: 559,588.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,028.50 : 1,028,139.33 = 405,499.18 : x
  2. Step 2: Convert to fraction form
    745,028.50/1,028,139.33 = 405,499.18/x
  3. Step 3: Cross multiply
    745,028.50x = 1,028,139.33 × 405,499.18
  4. Step 4: Simplify right side
    745,028.50x = 416,909,655,240.75
  5. Step 5: Solve for x
    x = 416,909,655,240.75/745,028.50
  6. Step 6: Final answer
    x = 559,588.87

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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.