Home / 709,556.95-979,174.71-387,269.36

Finding the Fourth Proportional to 709,556.95, 979,174.71 and 387,269.36

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Solution

The fourth proportional to 709,556.95, 979,174.71 and 387,269.36 is: 534,424.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,556.95 : 979,174.71 = 387,269.36 : x
  2. Step 2: Convert to fraction form
    709,556.95/979,174.71 = 387,269.36/x
  3. Step 3: Cross multiply
    709,556.95x = 979,174.71 × 387,269.36
  4. Step 4: Simplify right side
    709,556.95x = 379,204,358,374.01
  5. Step 5: Solve for x
    x = 379,204,358,374.01/709,556.95
  6. Step 6: Final answer
    x = 534,424.14

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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.