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Finding the Fourth Proportional to 436,883,655.60, 655,325,483.40 and 399,470,209.20

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Solution

The fourth proportional to 436,883,655.60, 655,325,483.40 and 399,470,209.20 is: 599,205,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,883,655.60 : 655,325,483.40 = 399,470,209.20 : x
  2. Step 2: Convert to fraction form
    436,883,655.60/655,325,483.40 = 399,470,209.20/x
  3. Step 3: Cross multiply
    436,883,655.60x = 655,325,483.40 × 399,470,209.20
  4. Step 4: Simplify right side
    436,883,655.60x = 261,783,007,947,889,120
  5. Step 5: Solve for x
    x = 261,783,007,947,889,120/436,883,655.60
  6. Step 6: Final answer
    x = 599,205,313.80

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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.