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Finding the Fourth Proportional to 1,429,325.92, 1,972,381.32 and 784,742.48

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Solution

The fourth proportional to 1,429,325.92, 1,972,381.32 and 784,742.48 is: 1,082,896.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,325.92 : 1,972,381.32 = 784,742.48 : x
  2. Step 2: Convert to fraction form
    1,429,325.92/1,972,381.32 = 784,742.48/x
  3. Step 3: Cross multiply
    1,429,325.92x = 1,972,381.32 × 784,742.48
  4. Step 4: Simplify right side
    1,429,325.92x = 1,547,811,408,562.47
  5. Step 5: Solve for x
    x = 1,547,811,408,562.47/1,429,325.92
  6. Step 6: Final answer
    x = 1,082,896.06

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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.