Home / 687,156-1,030,799.61-213,714.24

Finding the Fourth Proportional to 687,156, 1,030,799.61 and 213,714.24

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Solution

The fourth proportional to 687,156, 1,030,799.61 and 213,714.24 is: 320,591.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,156 : 1,030,799.61 = 213,714.24 : x
  2. Step 2: Convert to fraction form
    687,156/1,030,799.61 = 213,714.24/x
  3. Step 3: Cross multiply
    687,156x = 1,030,799.61 × 213,714.24
  4. Step 4: Simplify right side
    687,156x = 220,296,555,243.45
  5. Step 5: Solve for x
    x = 220,296,555,243.45/687,156
  6. Step 6: Final answer
    x = 320,591.77

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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.