Home / 428,474.71-590,988.04-283,112.11

Finding the Fourth Proportional to 428,474.71, 590,988.04 and 283,112.11

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Solution

The fourth proportional to 428,474.71, 590,988.04 and 283,112.11 is: 390,491.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,474.71 : 590,988.04 = 283,112.11 : x
  2. Step 2: Convert to fraction form
    428,474.71/590,988.04 = 283,112.11/x
  3. Step 3: Cross multiply
    428,474.71x = 590,988.04 × 283,112.11
  4. Step 4: Simplify right side
    428,474.71x = 167,315,870,989.16
  5. Step 5: Solve for x
    x = 167,315,870,989.16/428,474.71
  6. Step 6: Final answer
    x = 390,491.82

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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.