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Finding the Fourth Proportional to 707,667.78, 976,571.89 and 401,741.62

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Solution

The fourth proportional to 707,667.78, 976,571.89 and 401,741.62 is: 554,397.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,667.78 : 976,571.89 = 401,741.62 : x
  2. Step 2: Convert to fraction form
    707,667.78/976,571.89 = 401,741.62/x
  3. Step 3: Cross multiply
    707,667.78x = 976,571.89 × 401,741.62
  4. Step 4: Simplify right side
    707,667.78x = 392,329,573,135.06
  5. Step 5: Solve for x
    x = 392,329,573,135.06/707,667.78
  6. Step 6: Final answer
    x = 554,397.96

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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.