Home / 687,695.40-1,031,538.24-374,145.48

Finding the Fourth Proportional to 687,695.40, 1,031,538.24 and 374,145.48

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Solution

The fourth proportional to 687,695.40, 1,031,538.24 and 374,145.48 is: 561,215.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,695.40 : 1,031,538.24 = 374,145.48 : x
  2. Step 2: Convert to fraction form
    687,695.40/1,031,538.24 = 374,145.48/x
  3. Step 3: Cross multiply
    687,695.40x = 1,031,538.24 × 374,145.48
  4. Step 4: Simplify right side
    687,695.40x = 385,945,369,943.16
  5. Step 5: Solve for x
    x = 385,945,369,943.16/687,695.40
  6. Step 6: Final answer
    x = 561,215.58

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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.