Home / 664,847,999.20-997,271,998.80-610,428,440.80

Finding the Fourth Proportional to 664,847,999.20, 997,271,998.80 and 610,428,440.80

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Solution

The fourth proportional to 664,847,999.20, 997,271,998.80 and 610,428,440.80 is: 915,642,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,847,999.20 : 997,271,998.80 = 610,428,440.80 : x
  2. Step 2: Convert to fraction form
    664,847,999.20/997,271,998.80 = 610,428,440.80/x
  3. Step 3: Cross multiply
    664,847,999.20x = 997,271,998.80 × 610,428,440.80
  4. Step 4: Simplify right side
    664,847,999.20x = 608,763,191,280,983,424
  5. Step 5: Solve for x
    x = 608,763,191,280,983,424/664,847,999.20
  6. Step 6: Final answer
    x = 915,642,661.20

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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.