Home / 873,090,371.20-1,308,860,900.88-320,265,638.68

Finding the Fourth Proportional to 873,090,371.20, 1,308,860,900.88 and 320,265,638.68

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Solution

The fourth proportional to 873,090,371.20, 1,308,860,900.88 and 320,265,638.68 is: 480,114,299.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,090,371.20 : 1,308,860,900.88 = 320,265,638.68 : x
  2. Step 2: Convert to fraction form
    873,090,371.20/1,308,860,900.88 = 320,265,638.68/x
  3. Step 3: Cross multiply
    873,090,371.20x = 1,308,860,900.88 × 320,265,638.68
  4. Step 4: Simplify right side
    873,090,371.20x = 419,183,172,363,613,440
  5. Step 5: Solve for x
    x = 419,183,172,363,613,440/873,090,371.20
  6. Step 6: Final answer
    x = 480,114,299.95

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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.