Home / 426,384,047.60-639,576,071.40-419,581,602.80

Finding the Fourth Proportional to 426,384,047.60, 639,576,071.40 and 419,581,602.80

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Solution

The fourth proportional to 426,384,047.60, 639,576,071.40 and 419,581,602.80 is: 629,372,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,384,047.60 : 639,576,071.40 = 419,581,602.80 : x
  2. Step 2: Convert to fraction form
    426,384,047.60/639,576,071.40 = 419,581,602.80/x
  3. Step 3: Cross multiply
    426,384,047.60x = 639,576,071.40 × 419,581,602.80
  4. Step 4: Simplify right side
    426,384,047.60x = 268,354,353,150,539,232
  5. Step 5: Solve for x
    x = 268,354,353,150,539,232/426,384,047.60
  6. Step 6: Final answer
    x = 629,372,404.20

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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.