Home / 687,871.35-1,030,932.23-612,638.55

Finding the Fourth Proportional to 687,871.35, 1,030,932.23 and 612,638.55

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Solution

The fourth proportional to 687,871.35, 1,030,932.23 and 612,638.55 is: 918,178.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,871.35 : 1,030,932.23 = 612,638.55 : x
  2. Step 2: Convert to fraction form
    687,871.35/1,030,932.23 = 612,638.55/x
  3. Step 3: Cross multiply
    687,871.35x = 1,030,932.23 × 612,638.55
  4. Step 4: Simplify right side
    687,871.35x = 631,588,823,472.27
  5. Step 5: Solve for x
    x = 631,588,823,472.27/687,871.35
  6. Step 6: Final answer
    x = 918,178.70

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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.