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Finding the Fourth Proportional to 1,787,661.95, 2,466,971.37 and 971,863.56

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Solution

The fourth proportional to 1,787,661.95, 2,466,971.37 and 971,863.56 is: 1,341,170.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,661.95 : 2,466,971.37 = 971,863.56 : x
  2. Step 2: Convert to fraction form
    1,787,661.95/2,466,971.37 = 971,863.56/x
  3. Step 3: Cross multiply
    1,787,661.95x = 2,466,971.37 × 971,863.56
  4. Step 4: Simplify right side
    1,787,661.95x = 2,397,559,578,066.28
  5. Step 5: Solve for x
    x = 2,397,559,578,066.28/1,787,661.95
  6. Step 6: Final answer
    x = 1,341,170.56

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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.