Home / 426,019.20-639,028.80-362,693.40

Finding the Fourth Proportional to 426,019.20, 639,028.80 and 362,693.40

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Solution

The fourth proportional to 426,019.20, 639,028.80 and 362,693.40 is: 544,040.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,019.20 : 639,028.80 = 362,693.40 : x
  2. Step 2: Convert to fraction form
    426,019.20/639,028.80 = 362,693.40/x
  3. Step 3: Cross multiply
    426,019.20x = 639,028.80 × 362,693.40
  4. Step 4: Simplify right side
    426,019.20x = 231,771,528,169.92
  5. Step 5: Solve for x
    x = 231,771,528,169.92/426,019.20
  6. Step 6: Final answer
    x = 544,040.10

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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.