Home / 853,558.40-1,280,968.81-404,280.05

Finding the Fourth Proportional to 853,558.40, 1,280,968.81 and 404,280.05

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Solution

The fourth proportional to 853,558.40, 1,280,968.81 and 404,280.05 is: 606,719.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,558.40 : 1,280,968.81 = 404,280.05 : x
  2. Step 2: Convert to fraction form
    853,558.40/1,280,968.81 = 404,280.05/x
  3. Step 3: Cross multiply
    853,558.40x = 1,280,968.81 × 404,280.05
  4. Step 4: Simplify right side
    853,558.40x = 517,870,134,555.24
  5. Step 5: Solve for x
    x = 517,870,134,555.24/853,558.40
  6. Step 6: Final answer
    x = 606,719.04

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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.