Home / 398,622.97-598,011.46-128,823.72

Finding the Fourth Proportional to 398,622.97, 598,011.46 and 128,823.72

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Solution

The fourth proportional to 398,622.97, 598,011.46 and 128,823.72 is: 193,260.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,622.97 : 598,011.46 = 128,823.72 : x
  2. Step 2: Convert to fraction form
    398,622.97/598,011.46 = 128,823.72/x
  3. Step 3: Cross multiply
    398,622.97x = 598,011.46 × 128,823.72
  4. Step 4: Simplify right side
    398,622.97x = 77,038,058,315.23
  5. Step 5: Solve for x
    x = 77,038,058,315.23/398,622.97
  6. Step 6: Final answer
    x = 193,260.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.