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Finding the Fourth Proportional to 707,712.42, 976,508.96 and 449,631.39

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Solution

The fourth proportional to 707,712.42, 976,508.96 and 449,631.39 is: 620,406.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,712.42 : 976,508.96 = 449,631.39 : x
  2. Step 2: Convert to fraction form
    707,712.42/976,508.96 = 449,631.39/x
  3. Step 3: Cross multiply
    707,712.42x = 976,508.96 × 449,631.39
  4. Step 4: Simplify right side
    707,712.42x = 439,069,081,032.25
  5. Step 5: Solve for x
    x = 439,069,081,032.25/707,712.42
  6. Step 6: Final answer
    x = 620,406.07

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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.