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Finding the Fourth Proportional to 1,262,741.03, 1,742,620.80 and 689,818.10

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Solution

The fourth proportional to 1,262,741.03, 1,742,620.80 and 689,818.10 is: 951,969.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,741.03 : 1,742,620.80 = 689,818.10 : x
  2. Step 2: Convert to fraction form
    1,262,741.03/1,742,620.80 = 689,818.10/x
  3. Step 3: Cross multiply
    1,262,741.03x = 1,742,620.80 × 689,818.10
  4. Step 4: Simplify right side
    1,262,741.03x = 1,202,091,360,563.38
  5. Step 5: Solve for x
    x = 1,202,091,360,563.38/1,262,741.03
  6. Step 6: Final answer
    x = 951,969.83

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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.