Home / 687,587.12-1,031,381-214,310.64

Finding the Fourth Proportional to 687,587.12, 1,031,381 and 214,310.64

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Solution

The fourth proportional to 687,587.12, 1,031,381 and 214,310.64 is: 321,466.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,587.12 : 1,031,381 = 214,310.64 : x
  2. Step 2: Convert to fraction form
    687,587.12/1,031,381 = 214,310.64/x
  3. Step 3: Cross multiply
    687,587.12x = 1,031,381 × 214,310.64
  4. Step 4: Simplify right side
    687,587.12x = 221,035,922,193.84
  5. Step 5: Solve for x
    x = 221,035,922,193.84/687,587.12
  6. Step 6: Final answer
    x = 321,466.06

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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.