Home / 581,816.49-802,451.31-398,163.85

Finding the Fourth Proportional to 581,816.49, 802,451.31 and 398,163.85

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Solution

The fourth proportional to 581,816.49, 802,451.31 and 398,163.85 is: 549,154.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,816.49 : 802,451.31 = 398,163.85 : x
  2. Step 2: Convert to fraction form
    581,816.49/802,451.31 = 398,163.85/x
  3. Step 3: Cross multiply
    581,816.49x = 802,451.31 × 398,163.85
  4. Step 4: Simplify right side
    581,816.49x = 319,507,104,041.69
  5. Step 5: Solve for x
    x = 319,507,104,041.69/581,816.49
  6. Step 6: Final answer
    x = 549,154.43

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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.