Home / 1,250,445.21-1,724,985.23-820,665.69

Finding the Fourth Proportional to 1,250,445.21, 1,724,985.23 and 820,665.69

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Solution

The fourth proportional to 1,250,445.21, 1,724,985.23 and 820,665.69 is: 1,132,105.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250,445.21 : 1,724,985.23 = 820,665.69 : x
  2. Step 2: Convert to fraction form
    1,250,445.21/1,724,985.23 = 820,665.69/x
  3. Step 3: Cross multiply
    1,250,445.21x = 1,724,985.23 × 820,665.69
  4. Step 4: Simplify right side
    1,250,445.21x = 1,415,636,189,914.43
  5. Step 5: Solve for x
    x = 1,415,636,189,914.43/1,250,445.21
  6. Step 6: Final answer
    x = 1,132,105.73

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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.