Home / 728,117.47-1,004,806.77-405,848

Finding the Fourth Proportional to 728,117.47, 1,004,806.77 and 405,848

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Solution

The fourth proportional to 728,117.47, 1,004,806.77 and 405,848 is: 560,072.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,117.47 : 1,004,806.77 = 405,848 : x
  2. Step 2: Convert to fraction form
    728,117.47/1,004,806.77 = 405,848/x
  3. Step 3: Cross multiply
    728,117.47x = 1,004,806.77 × 405,848
  4. Step 4: Simplify right side
    728,117.47x = 407,798,817,990.96
  5. Step 5: Solve for x
    x = 407,798,817,990.96/728,117.47
  6. Step 6: Final answer
    x = 560,072.84

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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.