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Finding the Fourth Proportional to 709,022.09, 978,811.67 and 547,514.57

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Solution

The fourth proportional to 709,022.09, 978,811.67 and 547,514.57 is: 755,849.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,022.09 : 978,811.67 = 547,514.57 : x
  2. Step 2: Convert to fraction form
    709,022.09/978,811.67 = 547,514.57/x
  3. Step 3: Cross multiply
    709,022.09x = 978,811.67 × 547,514.57
  4. Step 4: Simplify right side
    709,022.09x = 535,913,647,085.76
  5. Step 5: Solve for x
    x = 535,913,647,085.76/709,022.09
  6. Step 6: Final answer
    x = 755,849.02

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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.