Home / 811,209.81-1,119,619.29-521,183.93

Finding the Fourth Proportional to 811,209.81, 1,119,619.29 and 521,183.93

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Solution

The fourth proportional to 811,209.81, 1,119,619.29 and 521,183.93 is: 719,330.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,209.81 : 1,119,619.29 = 521,183.93 : x
  2. Step 2: Convert to fraction form
    811,209.81/1,119,619.29 = 521,183.93/x
  3. Step 3: Cross multiply
    811,209.81x = 1,119,619.29 × 521,183.93
  4. Step 4: Simplify right side
    811,209.81x = 583,527,581,666.01
  5. Step 5: Solve for x
    x = 583,527,581,666.01/811,209.81
  6. Step 6: Final answer
    x = 719,330.04

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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.