Home / 1,240,812.34-1,711,884.99-811,343.86

Finding the Fourth Proportional to 1,240,812.34, 1,711,884.99 and 811,343.86

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Solution

The fourth proportional to 1,240,812.34, 1,711,884.99 and 811,343.86 is: 1,119,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,812.34 : 1,711,884.99 = 811,343.86 : x
  2. Step 2: Convert to fraction form
    1,240,812.34/1,711,884.99 = 811,343.86/x
  3. Step 3: Cross multiply
    1,240,812.34x = 1,711,884.99 × 811,343.86
  4. Step 4: Simplify right side
    1,240,812.34x = 1,388,927,375,662.66
  5. Step 5: Solve for x
    x = 1,388,927,375,662.66/1,240,812.34
  6. Step 6: Final answer
    x = 1,119,369.41

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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.