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Finding the Fourth Proportional to 1,265,944.97, 1,747,008.78 and 693,038.45

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Solution

The fourth proportional to 1,265,944.97, 1,747,008.78 and 693,038.45 is: 956,395.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,944.97 : 1,747,008.78 = 693,038.45 : x
  2. Step 2: Convert to fraction form
    1,265,944.97/1,747,008.78 = 693,038.45/x
  3. Step 3: Cross multiply
    1,265,944.97x = 1,747,008.78 × 693,038.45
  4. Step 4: Simplify right side
    1,265,944.97x = 1,210,744,258,796.22
  5. Step 5: Solve for x
    x = 1,210,744,258,796.22/1,265,944.97
  6. Step 6: Final answer
    x = 956,395.65

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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.