Home / 1,238,586.62-1,709,263.88-687,313.63

Finding the Fourth Proportional to 1,238,586.62, 1,709,263.88 and 687,313.63

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Solution

The fourth proportional to 1,238,586.62, 1,709,263.88 and 687,313.63 is: 948,500.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,586.62 : 1,709,263.88 = 687,313.63 : x
  2. Step 2: Convert to fraction form
    1,238,586.62/1,709,263.88 = 687,313.63/x
  3. Step 3: Cross multiply
    1,238,586.62x = 1,709,263.88 × 687,313.63
  4. Step 4: Simplify right side
    1,238,586.62x = 1,174,800,358,554.12
  5. Step 5: Solve for x
    x = 1,174,800,358,554.12/1,238,586.62
  6. Step 6: Final answer
    x = 948,500.77

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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.