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Finding the Fourth Proportional to 426,266.88, 639,399.24 and 400,284.24

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Solution

The fourth proportional to 426,266.88, 639,399.24 and 400,284.24 is: 600,425.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,266.88 : 639,399.24 = 400,284.24 : x
  2. Step 2: Convert to fraction form
    426,266.88/639,399.24 = 400,284.24/x
  3. Step 3: Cross multiply
    426,266.88x = 639,399.24 × 400,284.24
  4. Step 4: Simplify right side
    426,266.88x = 255,941,438,839.98
  5. Step 5: Solve for x
    x = 255,941,438,839.98/426,266.88
  6. Step 6: Final answer
    x = 600,425.35

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1.5x scale

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.