Home / 1,286,343.40-1,773,700.12-820,575.96

Finding the Fourth Proportional to 1,286,343.40, 1,773,700.12 and 820,575.96

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Solution

The fourth proportional to 1,286,343.40, 1,773,700.12 and 820,575.96 is: 1,131,467.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,343.40 : 1,773,700.12 = 820,575.96 : x
  2. Step 2: Convert to fraction form
    1,286,343.40/1,773,700.12 = 820,575.96/x
  3. Step 3: Cross multiply
    1,286,343.40x = 1,773,700.12 × 820,575.96
  4. Step 4: Simplify right side
    1,286,343.40x = 1,455,455,678,721.12
  5. Step 5: Solve for x
    x = 1,455,455,678,721.12/1,286,343.40
  6. Step 6: Final answer
    x = 1,131,467.44

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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.