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Finding the Fourth Proportional to 426,077.60, 639,116.40 and 269,002.40

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Solution

The fourth proportional to 426,077.60, 639,116.40 and 269,002.40 is: 403,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,077.60 : 639,116.40 = 269,002.40 : x
  2. Step 2: Convert to fraction form
    426,077.60/639,116.40 = 269,002.40/x
  3. Step 3: Cross multiply
    426,077.60x = 639,116.40 × 269,002.40
  4. Step 4: Simplify right side
    426,077.60x = 171,923,845,479.36
  5. Step 5: Solve for x
    x = 171,923,845,479.36/426,077.60
  6. Step 6: Final answer
    x = 403,503.60

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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.