Home / 853,403.60-1,280,105.40-433,499.60

Finding the Fourth Proportional to 853,403.60, 1,280,105.40 and 433,499.60

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Solution

The fourth proportional to 853,403.60, 1,280,105.40 and 433,499.60 is: 650,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,403.60 : 1,280,105.40 = 433,499.60 : x
  2. Step 2: Convert to fraction form
    853,403.60/1,280,105.40 = 433,499.60/x
  3. Step 3: Cross multiply
    853,403.60x = 1,280,105.40 × 433,499.60
  4. Step 4: Simplify right side
    853,403.60x = 554,925,178,857.84
  5. Step 5: Solve for x
    x = 554,925,178,857.84/853,403.60
  6. Step 6: Final answer
    x = 650,249.40

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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.