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Finding the Fourth Proportional to 707,641.56, 976,535.70 and 401,715.30

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Solution

The fourth proportional to 707,641.56, 976,535.70 and 401,715.30 is: 554,361.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,641.56 : 976,535.70 = 401,715.30 : x
  2. Step 2: Convert to fraction form
    707,641.56/976,535.70 = 401,715.30/x
  3. Step 3: Cross multiply
    707,641.56x = 976,535.70 × 401,715.30
  4. Step 4: Simplify right side
    707,641.56x = 392,289,331,686.21
  5. Step 5: Solve for x
    x = 392,289,331,686.21/707,641.56
  6. Step 6: Final answer
    x = 554,361.63

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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.