Home / 1,238,590.74-1,709,269.56-687,317.76

Finding the Fourth Proportional to 1,238,590.74, 1,709,269.56 and 687,317.76

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Solution

The fourth proportional to 1,238,590.74, 1,709,269.56 and 687,317.76 is: 948,506.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,590.74 : 1,709,269.56 = 687,317.76 : x
  2. Step 2: Convert to fraction form
    1,238,590.74/1,709,269.56 = 687,317.76/x
  3. Step 3: Cross multiply
    1,238,590.74x = 1,709,269.56 × 687,317.76
  4. Step 4: Simplify right side
    1,238,590.74x = 1,174,811,325,215.39
  5. Step 5: Solve for x
    x = 1,174,811,325,215.39/1,238,590.74
  6. Step 6: Final answer
    x = 948,506.47

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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.