Home / 686,764.60-1,030,223.70-213,446.20

Finding the Fourth Proportional to 686,764.60, 1,030,223.70 and 213,446.20

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Solution

The fourth proportional to 686,764.60, 1,030,223.70 and 213,446.20 is: 320,193.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,764.60 : 1,030,223.70 = 213,446.20 : x
  2. Step 2: Convert to fraction form
    686,764.60/1,030,223.70 = 213,446.20/x
  3. Step 3: Cross multiply
    686,764.60x = 1,030,223.70 × 213,446.20
  4. Step 4: Simplify right side
    686,764.60x = 219,897,333,914.94
  5. Step 5: Solve for x
    x = 219,897,333,914.94/686,764.60
  6. Step 6: Final answer
    x = 320,193.17

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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.