Home / 327,009,810.12-490,110,805.38-280,625,639.64

Finding the Fourth Proportional to 327,009,810.12, 490,110,805.38 and 280,625,639.64

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Solution

The fourth proportional to 327,009,810.12, 490,110,805.38 and 280,625,639.64 is: 420,591,841.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,009,810.12 : 490,110,805.38 = 280,625,639.64 : x
  2. Step 2: Convert to fraction form
    327,009,810.12/490,110,805.38 = 280,625,639.64/x
  3. Step 3: Cross multiply
    327,009,810.12x = 490,110,805.38 × 280,625,639.64
  4. Step 4: Simplify right side
    327,009,810.12x = 137,537,658,254,238,048
  5. Step 5: Solve for x
    x = 137,537,658,254,238,048/327,009,810.12
  6. Step 6: Final answer
    x = 420,591,841.58

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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.