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Finding the Fourth Proportional to 707,710.68, 976,506.55 and 449,629.64

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Solution

The fourth proportional to 707,710.68, 976,506.55 and 449,629.64 is: 620,403.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,710.68 : 976,506.55 = 449,629.64 : x
  2. Step 2: Convert to fraction form
    707,710.68/976,506.55 = 449,629.64/x
  3. Step 3: Cross multiply
    707,710.68x = 976,506.55 × 449,629.64
  4. Step 4: Simplify right side
    707,710.68x = 439,066,287,508.34
  5. Step 5: Solve for x
    x = 439,066,287,508.34/707,710.68
  6. Step 6: Final answer
    x = 620,403.65

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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.