Home / 687,288.60-1,030,962.06-213,982.92

Finding the Fourth Proportional to 687,288.60, 1,030,962.06 and 213,982.92

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Solution

The fourth proportional to 687,288.60, 1,030,962.06 and 213,982.92 is: 320,983.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,288.60 : 1,030,962.06 = 213,982.92 : x
  2. Step 2: Convert to fraction form
    687,288.60/1,030,962.06 = 213,982.92/x
  3. Step 3: Cross multiply
    687,288.60x = 1,030,962.06 × 213,982.92
  4. Step 4: Simplify right side
    687,288.60x = 220,608,272,008.02
  5. Step 5: Solve for x
    x = 220,608,272,008.02/687,288.60
  6. Step 6: Final answer
    x = 320,983.46

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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.