Home / 426,007.20-639,010.80-362,681.40

Finding the Fourth Proportional to 426,007.20, 639,010.80 and 362,681.40

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Solution

The fourth proportional to 426,007.20, 639,010.80 and 362,681.40 is: 544,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,007.20 : 639,010.80 = 362,681.40 : x
  2. Step 2: Convert to fraction form
    426,007.20/639,010.80 = 362,681.40/x
  3. Step 3: Cross multiply
    426,007.20x = 639,010.80 × 362,681.40
  4. Step 4: Simplify right side
    426,007.20x = 231,757,331,559.12
  5. Step 5: Solve for x
    x = 231,757,331,559.12/426,007.20
  6. Step 6: Final answer
    x = 544,022.10

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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.