Home / 756,389.80-1,134,584.70-505,714.60

Finding the Fourth Proportional to 756,389.80, 1,134,584.70 and 505,714.60

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Solution

The fourth proportional to 756,389.80, 1,134,584.70 and 505,714.60 is: 758,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,389.80 : 1,134,584.70 = 505,714.60 : x
  2. Step 2: Convert to fraction form
    756,389.80/1,134,584.70 = 505,714.60/x
  3. Step 3: Cross multiply
    756,389.80x = 1,134,584.70 × 505,714.60
  4. Step 4: Simplify right side
    756,389.80x = 573,776,047,726.62
  5. Step 5: Solve for x
    x = 573,776,047,726.62/756,389.80
  6. Step 6: Final answer
    x = 758,571.90

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Double scale
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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.