Home / 885,726.40-1,328,589.60-531,140.80

Finding the Fourth Proportional to 885,726.40, 1,328,589.60 and 531,140.80

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Solution

The fourth proportional to 885,726.40, 1,328,589.60 and 531,140.80 is: 796,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,726.40 : 1,328,589.60 = 531,140.80 : x
  2. Step 2: Convert to fraction form
    885,726.40/1,328,589.60 = 531,140.80/x
  3. Step 3: Cross multiply
    885,726.40x = 1,328,589.60 × 531,140.80
  4. Step 4: Simplify right side
    885,726.40x = 705,668,143,015.68
  5. Step 5: Solve for x
    x = 705,668,143,015.68/885,726.40
  6. Step 6: Final answer
    x = 796,711.20

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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.