Home / 687,768.06-1,031,320.26-288,301.56

Finding the Fourth Proportional to 687,768.06, 1,031,320.26 and 288,301.56

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Solution

The fourth proportional to 687,768.06, 1,031,320.26 and 288,301.56 is: 432,313.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,768.06 : 1,031,320.26 = 288,301.56 : x
  2. Step 2: Convert to fraction form
    687,768.06/1,031,320.26 = 288,301.56/x
  3. Step 3: Cross multiply
    687,768.06x = 1,031,320.26 × 288,301.56
  4. Step 4: Simplify right side
    687,768.06x = 297,331,239,817.61
  5. Step 5: Solve for x
    x = 297,331,239,817.61/687,768.06
  6. Step 6: Final answer
    x = 432,313.24

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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.