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Finding the Fourth Proportional to 426,264,003.60, 639,396,005.40 and 426,264,003.60

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Solution

The fourth proportional to 426,264,003.60, 639,396,005.40 and 426,264,003.60 is: 639,396,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,264,003.60 : 639,396,005.40 = 426,264,003.60 : x
  2. Step 2: Convert to fraction form
    426,264,003.60/639,396,005.40 = 426,264,003.60/x
  3. Step 3: Cross multiply
    426,264,003.60x = 639,396,005.40 × 426,264,003.60
  4. Step 4: Simplify right side
    426,264,003.60x = 272,551,501,147,651,232
  5. Step 5: Solve for x
    x = 272,551,501,147,651,232/426,264,003.60
  6. Step 6: Final answer
    x = 639,396,005.40

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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.