Home / 1,238,570.72-1,709,195.28-687,282.56

Finding the Fourth Proportional to 1,238,570.72, 1,709,195.28 and 687,282.56

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Solution

The fourth proportional to 1,238,570.72, 1,709,195.28 and 687,282.56 is: 948,432.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,570.72 : 1,709,195.28 = 687,282.56 : x
  2. Step 2: Convert to fraction form
    1,238,570.72/1,709,195.28 = 687,282.56/x
  3. Step 3: Cross multiply
    1,238,570.72x = 1,709,195.28 × 687,282.56
  4. Step 4: Simplify right side
    1,238,570.72x = 1,174,700,107,578.32
  5. Step 5: Solve for x
    x = 1,174,700,107,578.32/1,238,570.72
  6. Step 6: Final answer
    x = 948,432.00

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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.