Home / 399,610,938.51-599,143,629.63-212,892,797.27

Finding the Fourth Proportional to 399,610,938.51, 599,143,629.63 and 212,892,797.27

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Solution

The fourth proportional to 399,610,938.51, 599,143,629.63 and 212,892,797.27 is: 319,193,873.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,610,938.51 : 599,143,629.63 = 212,892,797.27 : x
  2. Step 2: Convert to fraction form
    399,610,938.51/599,143,629.63 = 212,892,797.27/x
  3. Step 3: Cross multiply
    399,610,938.51x = 599,143,629.63 × 212,892,797.27
  4. Step 4: Simplify right side
    399,610,938.51x = 127,553,363,279,929,424
  5. Step 5: Solve for x
    x = 127,553,363,279,929,424/399,610,938.51
  6. Step 6: Final answer
    x = 319,193,873.31

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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.