Home / 687,858.26-1,031,823.40-208,073.77

Finding the Fourth Proportional to 687,858.26, 1,031,823.40 and 208,073.77

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Solution

The fourth proportional to 687,858.26, 1,031,823.40 and 208,073.77 is: 312,121.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,858.26 : 1,031,823.40 = 208,073.77 : x
  2. Step 2: Convert to fraction form
    687,858.26/1,031,823.40 = 208,073.77/x
  3. Step 3: Cross multiply
    687,858.26x = 1,031,823.40 × 208,073.77
  4. Step 4: Simplify right side
    687,858.26x = 214,695,384,812.22
  5. Step 5: Solve for x
    x = 214,695,384,812.22/687,858.26
  6. Step 6: Final answer
    x = 312,121.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.