Home / 420,923,008.80-631,384,513.20-265,954,813.20

Finding the Fourth Proportional to 420,923,008.80, 631,384,513.20 and 265,954,813.20

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Solution

The fourth proportional to 420,923,008.80, 631,384,513.20 and 265,954,813.20 is: 398,932,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,923,008.80 : 631,384,513.20 = 265,954,813.20 : x
  2. Step 2: Convert to fraction form
    420,923,008.80/631,384,513.20 = 265,954,813.20/x
  3. Step 3: Cross multiply
    420,923,008.80x = 631,384,513.20 × 265,954,813.20
  4. Step 4: Simplify right side
    420,923,008.80x = 167,919,750,265,478,944
  5. Step 5: Solve for x
    x = 167,919,750,265,478,944/420,923,008.80
  6. Step 6: Final answer
    x = 398,932,219.80

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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.