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Finding the Fourth Proportional to 1,262,750.40, 1,742,633.04 and 689,800.08

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Solution

The fourth proportional to 1,262,750.40, 1,742,633.04 and 689,800.08 is: 951,944.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,750.40 : 1,742,633.04 = 689,800.08 : x
  2. Step 2: Convert to fraction form
    1,262,750.40/1,742,633.04 = 689,800.08/x
  3. Step 3: Cross multiply
    1,262,750.40x = 1,742,633.04 × 689,800.08
  4. Step 4: Simplify right side
    1,262,750.40x = 1,202,068,410,402.64
  5. Step 5: Solve for x
    x = 1,202,068,410,402.64/1,262,750.40
  6. Step 6: Final answer
    x = 951,944.59

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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.