Home / 687,799.40-1,031,844.90-207,987.80

Finding the Fourth Proportional to 687,799.40, 1,031,844.90 and 207,987.80

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Solution

The fourth proportional to 687,799.40, 1,031,844.90 and 207,987.80 is: 312,025.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,799.40 : 1,031,844.90 = 207,987.80 : x
  2. Step 2: Convert to fraction form
    687,799.40/1,031,844.90 = 207,987.80/x
  3. Step 3: Cross multiply
    687,799.40x = 1,031,844.90 × 207,987.80
  4. Step 4: Simplify right side
    687,799.40x = 214,611,150,692.22
  5. Step 5: Solve for x
    x = 214,611,150,692.22/687,799.40
  6. Step 6: Final answer
    x = 312,025.79

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1.5x scale

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.