Home / 523,328,851.21-722,198,657.45-288,387,919.01

Finding the Fourth Proportional to 523,328,851.21, 722,198,657.45 and 288,387,919.01

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Solution

The fourth proportional to 523,328,851.21, 722,198,657.45 and 288,387,919.01 is: 397,977,996.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,328,851.21 : 722,198,657.45 = 288,387,919.01 : x
  2. Step 2: Convert to fraction form
    523,328,851.21/722,198,657.45 = 288,387,919.01/x
  3. Step 3: Cross multiply
    523,328,851.21x = 722,198,657.45 × 288,387,919.01
  4. Step 4: Simplify right side
    523,328,851.21x = 208,273,367,930,931,296
  5. Step 5: Solve for x
    x = 208,273,367,930,931,296/523,328,851.21
  6. Step 6: Final answer
    x = 397,977,996.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.