Home / 765,247.64-1,056,036.78-421,104.56

Finding the Fourth Proportional to 765,247.64, 1,056,036.78 and 421,104.56

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Solution

The fourth proportional to 765,247.64, 1,056,036.78 and 421,104.56 is: 581,121.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,247.64 : 1,056,036.78 = 421,104.56 : x
  2. Step 2: Convert to fraction form
    765,247.64/1,056,036.78 = 421,104.56/x
  3. Step 3: Cross multiply
    765,247.64x = 1,056,036.78 × 421,104.56
  4. Step 4: Simplify right side
    765,247.64x = 444,701,903,585.72
  5. Step 5: Solve for x
    x = 444,701,903,585.72/765,247.64
  6. Step 6: Final answer
    x = 581,121.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.