Home / 765,529.46-1,056,422.30-421,358.02

Finding the Fourth Proportional to 765,529.46, 1,056,422.30 and 421,358.02

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Solution

The fourth proportional to 765,529.46, 1,056,422.30 and 421,358.02 is: 581,469.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,529.46 : 1,056,422.30 = 421,358.02 : x
  2. Step 2: Convert to fraction form
    765,529.46/1,056,422.30 = 421,358.02/x
  3. Step 3: Cross multiply
    765,529.46x = 1,056,422.30 × 421,358.02
  4. Step 4: Simplify right side
    765,529.46x = 445,132,006,234.14
  5. Step 5: Solve for x
    x = 445,132,006,234.14/765,529.46
  6. Step 6: Final answer
    x = 581,469.46

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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.