Home / 816,389.80-1,224,293.10-283,928.20

Finding the Fourth Proportional to 816,389.80, 1,224,293.10 and 283,928.20

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Solution

The fourth proportional to 816,389.80, 1,224,293.10 and 283,928.20 is: 425,790.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,389.80 : 1,224,293.10 = 283,928.20 : x
  2. Step 2: Convert to fraction form
    816,389.80/1,224,293.10 = 283,928.20/x
  3. Step 3: Cross multiply
    816,389.80x = 1,224,293.10 × 283,928.20
  4. Step 4: Simplify right side
    816,389.80x = 347,611,336,155.42
  5. Step 5: Solve for x
    x = 347,611,336,155.42/816,389.80
  6. Step 6: Final answer
    x = 425,790.89

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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.