Home / 687,313.31-1,031,118.26-207,501.30

Finding the Fourth Proportional to 687,313.31, 1,031,118.26 and 207,501.30

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Solution

The fourth proportional to 687,313.31, 1,031,118.26 and 207,501.30 is: 311,296.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,313.31 : 1,031,118.26 = 207,501.30 : x
  2. Step 2: Convert to fraction form
    687,313.31/1,031,118.26 = 207,501.30/x
  3. Step 3: Cross multiply
    687,313.31x = 1,031,118.26 × 207,501.30
  4. Step 4: Simplify right side
    687,313.31x = 213,958,378,366.23
  5. Step 5: Solve for x
    x = 213,958,378,366.23/687,313.31
  6. Step 6: Final answer
    x = 311,296.72

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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.