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Finding the Fourth Proportional to 522,483,015.63, 721,026,679.31 and 287,533,676.10

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Solution

The fourth proportional to 522,483,015.63, 721,026,679.31 and 287,533,676.10 is: 396,796,537.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,483,015.63 : 721,026,679.31 = 287,533,676.10 : x
  2. Step 2: Convert to fraction form
    522,483,015.63/721,026,679.31 = 287,533,676.10/x
  3. Step 3: Cross multiply
    522,483,015.63x = 721,026,679.31 × 287,533,676.10
  4. Step 4: Simplify right side
    522,483,015.63x = 207,319,451,666,742,432
  5. Step 5: Solve for x
    x = 207,319,451,666,742,432/522,483,015.63
  6. Step 6: Final answer
    x = 396,796,537.81

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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.