Home / 1,272,835.06-1,909,781.28-515,212.12

Finding the Fourth Proportional to 1,272,835.06, 1,909,781.28 and 515,212.12

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Solution

The fourth proportional to 1,272,835.06, 1,909,781.28 and 515,212.12 is: 773,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,835.06 : 1,909,781.28 = 515,212.12 : x
  2. Step 2: Convert to fraction form
    1,272,835.06/1,909,781.28 = 515,212.12/x
  3. Step 3: Cross multiply
    1,272,835.06x = 1,909,781.28 × 515,212.12
  4. Step 4: Simplify right side
    1,272,835.06x = 983,942,462,005.11
  5. Step 5: Solve for x
    x = 983,942,462,005.11/1,272,835.06
  6. Step 6: Final answer
    x = 773,032.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.