Home / 687,610.53-1,031,626.95-328,239.96

Finding the Fourth Proportional to 687,610.53, 1,031,626.95 and 328,239.96

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Solution

The fourth proportional to 687,610.53, 1,031,626.95 and 328,239.96 is: 492,460.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,610.53 : 1,031,626.95 = 328,239.96 : x
  2. Step 2: Convert to fraction form
    687,610.53/1,031,626.95 = 328,239.96/x
  3. Step 3: Cross multiply
    687,610.53x = 1,031,626.95 × 328,239.96
  4. Step 4: Simplify right side
    687,610.53x = 338,621,188,802.92
  5. Step 5: Solve for x
    x = 338,621,188,802.92/687,610.53
  6. Step 6: Final answer
    x = 492,460.74

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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.