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Finding the Fourth Proportional to 707,606.70, 976,240.79 and 401,505.81

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Solution

The fourth proportional to 707,606.70, 976,240.79 and 401,505.81 is: 553,932.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,606.70 : 976,240.79 = 401,505.81 : x
  2. Step 2: Convert to fraction form
    707,606.70/976,240.79 = 401,505.81/x
  3. Step 3: Cross multiply
    707,606.70x = 976,240.79 × 401,505.81
  4. Step 4: Simplify right side
    707,606.70x = 391,966,342,255.26
  5. Step 5: Solve for x
    x = 391,966,342,255.26/707,606.70
  6. Step 6: Final answer
    x = 553,932.50

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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.