Home / 810,374.10-1,215,771.30-430,982.87

Finding the Fourth Proportional to 810,374.10, 1,215,771.30 and 430,982.87

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Solution

The fourth proportional to 810,374.10, 1,215,771.30 and 430,982.87 is: 646,586.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,374.10 : 1,215,771.30 = 430,982.87 : x
  2. Step 2: Convert to fraction form
    810,374.10/1,215,771.30 = 430,982.87/x
  3. Step 3: Cross multiply
    810,374.10x = 1,215,771.30 × 430,982.87
  4. Step 4: Simplify right side
    810,374.10x = 523,976,598,058.78
  5. Step 5: Solve for x
    x = 523,976,598,058.78/810,374.10
  6. Step 6: Final answer
    x = 646,586.06

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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.