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Finding the Fourth Proportional to 945,358.07, 1,412,009.03 and 855,261.87

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Solution

The fourth proportional to 945,358.07, 1,412,009.03 and 855,261.87 is: 1,277,439.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,358.07 : 1,412,009.03 = 855,261.87 : x
  2. Step 2: Convert to fraction form
    945,358.07/1,412,009.03 = 855,261.87/x
  3. Step 3: Cross multiply
    945,358.07x = 1,412,009.03 × 855,261.87
  4. Step 4: Simplify right side
    945,358.07x = 1,207,637,479,178.38
  5. Step 5: Solve for x
    x = 1,207,637,479,178.38/945,358.07
  6. Step 6: Final answer
    x = 1,277,439.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.