Home / 579,424,987.20-869,137,480.80-443,376,091.20

Finding the Fourth Proportional to 579,424,987.20, 869,137,480.80 and 443,376,091.20

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Solution

The fourth proportional to 579,424,987.20, 869,137,480.80 and 443,376,091.20 is: 665,064,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,424,987.20 : 869,137,480.80 = 443,376,091.20 : x
  2. Step 2: Convert to fraction form
    579,424,987.20/869,137,480.80 = 443,376,091.20/x
  3. Step 3: Cross multiply
    579,424,987.20x = 869,137,480.80 × 443,376,091.20
  4. Step 4: Simplify right side
    579,424,987.20x = 385,354,778,952,519,040
  5. Step 5: Solve for x
    x = 385,354,778,952,519,040/579,424,987.20
  6. Step 6: Final answer
    x = 665,064,136.80

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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.