Home / 522,910,136.72-721,592,711.55-299,731,821.39

Finding the Fourth Proportional to 522,910,136.72, 721,592,711.55 and 299,731,821.39

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Solution

The fourth proportional to 522,910,136.72, 721,592,711.55 and 299,731,821.39 is: 413,616,571.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,910,136.72 : 721,592,711.55 = 299,731,821.39 : x
  2. Step 2: Convert to fraction form
    522,910,136.72/721,592,711.55 = 299,731,821.39/x
  3. Step 3: Cross multiply
    522,910,136.72x = 721,592,711.55 × 299,731,821.39
  4. Step 4: Simplify right side
    522,910,136.72x = 216,284,297,734,630,368
  5. Step 5: Solve for x
    x = 216,284,297,734,630,368/522,910,136.72
  6. Step 6: Final answer
    x = 413,616,571.08

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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.