Home / 685,149.22-1,028,078.21-497,159.49

Finding the Fourth Proportional to 685,149.22, 1,028,078.21 and 497,159.49

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Solution

The fourth proportional to 685,149.22, 1,028,078.21 and 497,159.49 is: 745,996.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,149.22 : 1,028,078.21 = 497,159.49 : x
  2. Step 2: Convert to fraction form
    685,149.22/1,028,078.21 = 497,159.49/x
  3. Step 3: Cross multiply
    685,149.22x = 1,028,078.21 × 497,159.49
  4. Step 4: Simplify right side
    685,149.22x = 511,118,838,563.71
  5. Step 5: Solve for x
    x = 511,118,838,563.71/685,149.22
  6. Step 6: Final answer
    x = 745,996.38

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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.