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Finding the Fourth Proportional to 707,720.72, 976,682.23 and 401,825.56

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Solution

The fourth proportional to 707,720.72, 976,682.23 and 401,825.56 is: 554,534.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,720.72 : 976,682.23 = 401,825.56 : x
  2. Step 2: Convert to fraction form
    707,720.72/976,682.23 = 401,825.56/x
  3. Step 3: Cross multiply
    707,720.72x = 976,682.23 × 401,825.56
  4. Step 4: Simplify right side
    707,720.72x = 392,455,879,128.39
  5. Step 5: Solve for x
    x = 392,455,879,128.39/707,720.72
  6. Step 6: Final answer
    x = 554,534.96

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1.5x scale

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.