Home / 489,860.06-676,080.68-298,984.37

Finding the Fourth Proportional to 489,860.06, 676,080.68 and 298,984.37

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Solution

The fourth proportional to 489,860.06, 676,080.68 and 298,984.37 is: 412,643.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,860.06 : 676,080.68 = 298,984.37 : x
  2. Step 2: Convert to fraction form
    489,860.06/676,080.68 = 298,984.37/x
  3. Step 3: Cross multiply
    489,860.06x = 676,080.68 × 298,984.37
  4. Step 4: Simplify right side
    489,860.06x = 202,137,551,303.65
  5. Step 5: Solve for x
    x = 202,137,551,303.65/489,860.06
  6. Step 6: Final answer
    x = 412,643.47

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1.5x scale

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.