Home / 685,149.72-1,028,078.96-497,159.99

Finding the Fourth Proportional to 685,149.72, 1,028,078.96 and 497,159.99

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Solution

The fourth proportional to 685,149.72, 1,028,078.96 and 497,159.99 is: 745,997.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,149.72 : 1,028,078.96 = 497,159.99 : x
  2. Step 2: Convert to fraction form
    685,149.72/1,028,078.96 = 497,159.99/x
  3. Step 3: Cross multiply
    685,149.72x = 1,028,078.96 × 497,159.99
  4. Step 4: Simplify right side
    685,149.72x = 511,119,725,472.81
  5. Step 5: Solve for x
    x = 511,119,725,472.81/685,149.72
  6. Step 6: Final answer
    x = 745,997.13

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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.