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Finding the Fourth Proportional to 542,516,965.63, 812,751,415.65 and 320,525,917

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Solution

The fourth proportional to 542,516,965.63, 812,751,415.65 and 320,525,917 is: 480,183,863.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,516,965.63 : 812,751,415.65 = 320,525,917 : x
  2. Step 2: Convert to fraction form
    542,516,965.63/812,751,415.65 = 320,525,917/x
  3. Step 3: Cross multiply
    542,516,965.63x = 812,751,415.65 × 320,525,917
  4. Step 4: Simplify right side
    542,516,965.63x = 260,507,892,794,264,384
  5. Step 5: Solve for x
    x = 260,507,892,794,264,384/542,516,965.63
  6. Step 6: Final answer
    x = 480,183,863.91

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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.