Home / 745,394.63-1,028,644.59-405,862.88

Finding the Fourth Proportional to 745,394.63, 1,028,644.59 and 405,862.88

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Solution

The fourth proportional to 745,394.63, 1,028,644.59 and 405,862.88 is: 560,090.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,394.63 : 1,028,644.59 = 405,862.88 : x
  2. Step 2: Convert to fraction form
    745,394.63/1,028,644.59 = 405,862.88/x
  3. Step 3: Cross multiply
    745,394.63x = 1,028,644.59 × 405,862.88
  4. Step 4: Simplify right side
    745,394.63x = 417,488,650,650.60
  5. Step 5: Solve for x
    x = 417,488,650,650.60/745,394.63
  6. Step 6: Final answer
    x = 560,090.77

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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.