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Finding the Fourth Proportional to 525,311,999.20, 787,967,998.80 and 525,311,999.20

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Solution

The fourth proportional to 525,311,999.20, 787,967,998.80 and 525,311,999.20 is: 787,967,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,311,999.20 : 787,967,998.80 = 525,311,999.20 : x
  2. Step 2: Convert to fraction form
    525,311,999.20/787,967,998.80 = 525,311,999.20/x
  3. Step 3: Cross multiply
    525,311,999.20x = 787,967,998.80 × 525,311,999.20
  4. Step 4: Simplify right side
    525,311,999.20x = 413,929,044,755,251,136
  5. Step 5: Solve for x
    x = 413,929,044,755,251,136/525,311,999.20
  6. Step 6: Final answer
    x = 787,967,998.80

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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.