Home / 876,291.90-1,208,999.43-489,044.40

Finding the Fourth Proportional to 876,291.90, 1,208,999.43 and 489,044.40

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Solution

The fourth proportional to 876,291.90, 1,208,999.43 and 489,044.40 is: 674,723.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,291.90 : 1,208,999.43 = 489,044.40 : x
  2. Step 2: Convert to fraction form
    876,291.90/1,208,999.43 = 489,044.40/x
  3. Step 3: Cross multiply
    876,291.90x = 1,208,999.43 × 489,044.40
  4. Step 4: Simplify right side
    876,291.90x = 591,254,400,844.69
  5. Step 5: Solve for x
    x = 591,254,400,844.69/876,291.90
  6. Step 6: Final answer
    x = 674,723.12

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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.