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Finding the Fourth Proportional to 426,262,630.60, 639,393,945.90 and 426,262,630.60

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Solution

The fourth proportional to 426,262,630.60, 639,393,945.90 and 426,262,630.60 is: 639,393,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,262,630.60 : 639,393,945.90 = 426,262,630.60 : x
  2. Step 2: Convert to fraction form
    426,262,630.60/639,393,945.90 = 426,262,630.60/x
  3. Step 3: Cross multiply
    426,262,630.60x = 639,393,945.90 × 426,262,630.60
  4. Step 4: Simplify right side
    426,262,630.60x = 272,549,745,369,048,096
  5. Step 5: Solve for x
    x = 272,549,745,369,048,096/426,262,630.60
  6. Step 6: Final answer
    x = 639,393,945.90

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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.