Home / 687,558.03-1,031,392.18-261,298.06

Finding the Fourth Proportional to 687,558.03, 1,031,392.18 and 261,298.06

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Solution

The fourth proportional to 687,558.03, 1,031,392.18 and 261,298.06 is: 391,968.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,558.03 : 1,031,392.18 = 261,298.06 : x
  2. Step 2: Convert to fraction form
    687,558.03/1,031,392.18 = 261,298.06/x
  3. Step 3: Cross multiply
    687,558.03x = 1,031,392.18 × 261,298.06
  4. Step 4: Simplify right side
    687,558.03x = 269,500,775,733.17
  5. Step 5: Solve for x
    x = 269,500,775,733.17/687,558.03
  6. Step 6: Final answer
    x = 391,968.04

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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.