Home / 819,988.02-1,131,096.30-638,412.34

Finding the Fourth Proportional to 819,988.02, 1,131,096.30 and 638,412.34

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Solution

The fourth proportional to 819,988.02, 1,131,096.30 and 638,412.34 is: 880,629.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,988.02 : 1,131,096.30 = 638,412.34 : x
  2. Step 2: Convert to fraction form
    819,988.02/1,131,096.30 = 638,412.34/x
  3. Step 3: Cross multiply
    819,988.02x = 1,131,096.30 × 638,412.34
  4. Step 4: Simplify right side
    819,988.02x = 722,105,835,648.34
  5. Step 5: Solve for x
    x = 722,105,835,648.34/819,988.02
  6. Step 6: Final answer
    x = 880,629.74

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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.