Home / 1,238,660.99-1,709,348.64-687,459.89

Finding the Fourth Proportional to 1,238,660.99, 1,709,348.64 and 687,459.89

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Solution

The fourth proportional to 1,238,660.99, 1,709,348.64 and 687,459.89 is: 948,692.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,660.99 : 1,709,348.64 = 687,459.89 : x
  2. Step 2: Convert to fraction form
    1,238,660.99/1,709,348.64 = 687,459.89/x
  3. Step 3: Cross multiply
    1,238,660.99x = 1,709,348.64 × 687,459.89
  4. Step 4: Simplify right side
    1,238,660.99x = 1,175,108,619,479.31
  5. Step 5: Solve for x
    x = 1,175,108,619,479.31/1,238,660.99
  6. Step 6: Final answer
    x = 948,692.69

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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.