Home / 853,109.10-1,279,663.65-433,205.10

Finding the Fourth Proportional to 853,109.10, 1,279,663.65 and 433,205.10

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Solution

The fourth proportional to 853,109.10, 1,279,663.65 and 433,205.10 is: 649,807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,109.10 : 1,279,663.65 = 433,205.10 : x
  2. Step 2: Convert to fraction form
    853,109.10/1,279,663.65 = 433,205.10/x
  3. Step 3: Cross multiply
    853,109.10x = 1,279,663.65 × 433,205.10
  4. Step 4: Simplify right side
    853,109.10x = 554,356,819,464.62
  5. Step 5: Solve for x
    x = 554,356,819,464.62/853,109.10
  6. Step 6: Final answer
    x = 649,807.65

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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.