Home / 876,659.90-1,209,778.76-489,481.28

Finding the Fourth Proportional to 876,659.90, 1,209,778.76 and 489,481.28

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Solution

The fourth proportional to 876,659.90, 1,209,778.76 and 489,481.28 is: 675,477.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,659.90 : 1,209,778.76 = 489,481.28 : x
  2. Step 2: Convert to fraction form
    876,659.90/1,209,778.76 = 489,481.28/x
  3. Step 3: Cross multiply
    876,659.90x = 1,209,778.76 × 489,481.28
  4. Step 4: Simplify right side
    876,659.90x = 592,164,047,465.31
  5. Step 5: Solve for x
    x = 592,164,047,465.31/876,659.90
  6. Step 6: Final answer
    x = 675,477.52

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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.