Home / 489,185.87-674,948.00-282,403.60

Finding the Fourth Proportional to 489,185.87, 674,948.00 and 282,403.60

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Solution

The fourth proportional to 489,185.87, 674,948.00 and 282,403.60 is: 389,642.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,185.87 : 674,948.00 = 282,403.60 : x
  2. Step 2: Convert to fraction form
    489,185.87/674,948.00 = 282,403.60/x
  3. Step 3: Cross multiply
    489,185.87x = 674,948.00 × 282,403.60
  4. Step 4: Simplify right side
    489,185.87x = 190,607,744,031.44
  5. Step 5: Solve for x
    x = 190,607,744,031.44/489,185.87
  6. Step 6: Final answer
    x = 389,642.79

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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.