Home / 810,186.30-1,215,279.45-494,999.10

Finding the Fourth Proportional to 810,186.30, 1,215,279.45 and 494,999.10

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Solution

The fourth proportional to 810,186.30, 1,215,279.45 and 494,999.10 is: 742,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,186.30 : 1,215,279.45 = 494,999.10 : x
  2. Step 2: Convert to fraction form
    810,186.30/1,215,279.45 = 494,999.10/x
  3. Step 3: Cross multiply
    810,186.30x = 1,215,279.45 × 494,999.10
  4. Step 4: Simplify right side
    810,186.30x = 601,562,233,998.50
  5. Step 5: Solve for x
    x = 601,562,233,998.50/810,186.30
  6. Step 6: Final answer
    x = 742,498.65

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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.