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Finding the Fourth Proportional to 1,278,709.07, 1,764,614.88 and 705,745.13

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Solution

The fourth proportional to 1,278,709.07, 1,764,614.88 and 705,745.13 is: 973,926.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,709.07 : 1,764,614.88 = 705,745.13 : x
  2. Step 2: Convert to fraction form
    1,278,709.07/1,764,614.88 = 705,745.13/x
  3. Step 3: Cross multiply
    1,278,709.07x = 1,764,614.88 × 705,745.13
  4. Step 4: Simplify right side
    1,278,709.07x = 1,245,368,349,062.46
  5. Step 5: Solve for x
    x = 1,245,368,349,062.46/1,278,709.07
  6. Step 6: Final answer
    x = 973,926.27

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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.