Home / 687,271.23-1,031,054.67-207,458.82

Finding the Fourth Proportional to 687,271.23, 1,031,054.67 and 207,458.82

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Solution

The fourth proportional to 687,271.23, 1,031,054.67 and 207,458.82 is: 311,232.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,271.23 : 1,031,054.67 = 207,458.82 : x
  2. Step 2: Convert to fraction form
    687,271.23/1,031,054.67 = 207,458.82/x
  3. Step 3: Cross multiply
    687,271.23x = 1,031,054.67 × 207,458.82
  4. Step 4: Simplify right side
    687,271.23x = 213,901,385,193.69
  5. Step 5: Solve for x
    x = 213,901,385,193.69/687,271.23
  6. Step 6: Final answer
    x = 311,232.85

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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.