Home / 815,829.90-1,126,007.10-521,291.22

Finding the Fourth Proportional to 815,829.90, 1,126,007.10 and 521,291.22

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Solution

The fourth proportional to 815,829.90, 1,126,007.10 and 521,291.22 is: 719,485.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,829.90 : 1,126,007.10 = 521,291.22 : x
  2. Step 2: Convert to fraction form
    815,829.90/1,126,007.10 = 521,291.22/x
  3. Step 3: Cross multiply
    815,829.90x = 1,126,007.10 × 521,291.22
  4. Step 4: Simplify right side
    815,829.90x = 586,977,614,887.66
  5. Step 5: Solve for x
    x = 586,977,614,887.66/815,829.90
  6. Step 6: Final answer
    x = 719,485.29

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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.