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Finding the Fourth Proportional to 1,262,130.32, 1,741,742.04 and 689,158.28

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Solution

The fourth proportional to 1,262,130.32, 1,741,742.04 and 689,158.28 is: 951,039.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,130.32 : 1,741,742.04 = 689,158.28 : x
  2. Step 2: Convert to fraction form
    1,262,130.32/1,741,742.04 = 689,158.28/x
  3. Step 3: Cross multiply
    1,262,130.32x = 1,741,742.04 × 689,158.28
  4. Step 4: Simplify right side
    1,262,130.32x = 1,200,335,948,490.09
  5. Step 5: Solve for x
    x = 1,200,335,948,490.09/1,262,130.32
  6. Step 6: Final answer
    x = 951,039.63

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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.