Home / 756,378.20-1,133,012.10-519,987.80

Finding the Fourth Proportional to 756,378.20, 1,133,012.10 and 519,987.80

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Solution

The fourth proportional to 756,378.20, 1,133,012.10 and 519,987.80 is: 778,912.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,378.20 : 1,133,012.10 = 519,987.80 : x
  2. Step 2: Convert to fraction form
    756,378.20/1,133,012.10 = 519,987.80/x
  3. Step 3: Cross multiply
    756,378.20x = 1,133,012.10 × 519,987.80
  4. Step 4: Simplify right side
    756,378.20x = 589,152,469,252.38
  5. Step 5: Solve for x
    x = 589,152,469,252.38/756,378.20
  6. Step 6: Final answer
    x = 778,912.55

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Double scale
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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.