Home / 810,375.10-1,215,772.80-430,983.87

Finding the Fourth Proportional to 810,375.10, 1,215,772.80 and 430,983.87

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Solution

The fourth proportional to 810,375.10, 1,215,772.80 and 430,983.87 is: 646,587.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,375.10 : 1,215,772.80 = 430,983.87 : x
  2. Step 2: Convert to fraction form
    810,375.10/1,215,772.80 = 430,983.87/x
  3. Step 3: Cross multiply
    810,375.10x = 1,215,772.80 × 430,983.87
  4. Step 4: Simplify right side
    810,375.10x = 523,978,466,384.74
  5. Step 5: Solve for x
    x = 523,978,466,384.74/810,375.10
  6. Step 6: Final answer
    x = 646,587.57

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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.