Home / 678,019.80-1,017,029.70-172,579.80

Finding the Fourth Proportional to 678,019.80, 1,017,029.70 and 172,579.80

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Solution

The fourth proportional to 678,019.80, 1,017,029.70 and 172,579.80 is: 258,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,019.80 : 1,017,029.70 = 172,579.80 : x
  2. Step 2: Convert to fraction form
    678,019.80/1,017,029.70 = 172,579.80/x
  3. Step 3: Cross multiply
    678,019.80x = 1,017,029.70 × 172,579.80
  4. Step 4: Simplify right side
    678,019.80x = 175,518,782,220.06
  5. Step 5: Solve for x
    x = 175,518,782,220.06/678,019.80
  6. Step 6: Final answer
    x = 258,869.70

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Similar ratio
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1.5x scale

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.