Home / 687,915.60-1,030,998.60-612,682.80

Finding the Fourth Proportional to 687,915.60, 1,030,998.60 and 612,682.80

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Solution

The fourth proportional to 687,915.60, 1,030,998.60 and 612,682.80 is: 918,245.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,915.60 : 1,030,998.60 = 612,682.80 : x
  2. Step 2: Convert to fraction form
    687,915.60/1,030,998.60 = 612,682.80/x
  3. Step 3: Cross multiply
    687,915.60x = 1,030,998.60 × 612,682.80
  4. Step 4: Simplify right side
    687,915.60x = 631,675,109,044.08
  5. Step 5: Solve for x
    x = 631,675,109,044.08/687,915.60
  6. Step 6: Final answer
    x = 918,245.07

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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.