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Finding the Fourth Proportional to 707,426.38, 976,896.83 and 449,386.50

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Solution

The fourth proportional to 707,426.38, 976,896.83 and 449,386.50 is: 620,565.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,426.38 : 976,896.83 = 449,386.50 : x
  2. Step 2: Convert to fraction form
    707,426.38/976,896.83 = 449,386.50/x
  3. Step 3: Cross multiply
    707,426.38x = 976,896.83 × 449,386.50
  4. Step 4: Simplify right side
    707,426.38x = 439,004,247,294.80
  5. Step 5: Solve for x
    x = 439,004,247,294.80/707,426.38
  6. Step 6: Final answer
    x = 620,565.28

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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.