Home / 1,238,742.78-1,709,462.23-687,542.92

Finding the Fourth Proportional to 1,238,742.78, 1,709,462.23 and 687,542.92

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Solution

The fourth proportional to 1,238,742.78, 1,709,462.23 and 687,542.92 is: 948,807.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,742.78 : 1,709,462.23 = 687,542.92 : x
  2. Step 2: Convert to fraction form
    1,238,742.78/1,709,462.23 = 687,542.92/x
  3. Step 3: Cross multiply
    1,238,742.78x = 1,709,462.23 × 687,542.92
  4. Step 4: Simplify right side
    1,238,742.78x = 1,175,328,653,243.91
  5. Step 5: Solve for x
    x = 1,175,328,653,243.91/1,238,742.78
  6. Step 6: Final answer
    x = 948,807.67

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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.