Home / 806,546.30-1,209,819.45-413,330.30

Finding the Fourth Proportional to 806,546.30, 1,209,819.45 and 413,330.30

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Solution

The fourth proportional to 806,546.30, 1,209,819.45 and 413,330.30 is: 619,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,546.30 : 1,209,819.45 = 413,330.30 : x
  2. Step 2: Convert to fraction form
    806,546.30/1,209,819.45 = 413,330.30/x
  3. Step 3: Cross multiply
    806,546.30x = 1,209,819.45 × 413,330.30
  4. Step 4: Simplify right side
    806,546.30x = 500,055,036,214.34
  5. Step 5: Solve for x
    x = 500,055,036,214.34/806,546.30
  6. Step 6: Final answer
    x = 619,995.45

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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.