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Finding the Fourth Proportional to 745,242, 1,028,693.16 and 443,429.52

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Solution

The fourth proportional to 745,242, 1,028,693.16 and 443,429.52 is: 612,086.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,242 : 1,028,693.16 = 443,429.52 : x
  2. Step 2: Convert to fraction form
    745,242/1,028,693.16 = 443,429.52/x
  3. Step 3: Cross multiply
    745,242x = 1,028,693.16 × 443,429.52
  4. Step 4: Simplify right side
    745,242x = 456,152,914,166.08
  5. Step 5: Solve for x
    x = 456,152,914,166.08/745,242
  6. Step 6: Final answer
    x = 612,086.97

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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.