Home / 810,003.45-1,215,005.18-763,347.45

Finding the Fourth Proportional to 810,003.45, 1,215,005.18 and 763,347.45

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Solution

The fourth proportional to 810,003.45, 1,215,005.18 and 763,347.45 is: 1,145,021.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,003.45 : 1,215,005.18 = 763,347.45 : x
  2. Step 2: Convert to fraction form
    810,003.45/1,215,005.18 = 763,347.45/x
  3. Step 3: Cross multiply
    810,003.45x = 1,215,005.18 × 763,347.45
  4. Step 4: Simplify right side
    810,003.45x = 927,471,102,073.05
  5. Step 5: Solve for x
    x = 927,471,102,073.05/810,003.45
  6. Step 6: Final answer
    x = 1,145,021.18

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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.