Home / 812,140.96-1,120,784.40-444,643.84

Finding the Fourth Proportional to 812,140.96, 1,120,784.40 and 444,643.84

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Solution

The fourth proportional to 812,140.96, 1,120,784.40 and 444,643.84 is: 613,624.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,140.96 : 1,120,784.40 = 444,643.84 : x
  2. Step 2: Convert to fraction form
    812,140.96/1,120,784.40 = 444,643.84/x
  3. Step 3: Cross multiply
    812,140.96x = 1,120,784.40 × 444,643.84
  4. Step 4: Simplify right side
    812,140.96x = 498,349,879,428.10
  5. Step 5: Solve for x
    x = 498,349,879,428.10/812,140.96
  6. Step 6: Final answer
    x = 613,624.86

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Double scale
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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.