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Finding the Fourth Proportional to 1,262,737.62, 1,742,616.18 and 689,814.72

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Solution

The fourth proportional to 1,262,737.62, 1,742,616.18 and 689,814.72 is: 951,965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,737.62 : 1,742,616.18 = 689,814.72 : x
  2. Step 2: Convert to fraction form
    1,262,737.62/1,742,616.18 = 689,814.72/x
  3. Step 3: Cross multiply
    1,262,737.62x = 1,742,616.18 × 689,814.72
  4. Step 4: Simplify right side
    1,262,737.62x = 1,202,082,292,274.17
  5. Step 5: Solve for x
    x = 1,202,082,292,274.17/1,262,737.62
  6. Step 6: Final answer
    x = 951,965.22

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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.