Home / 712,231.80-1,068,347.70-213,595.80

Finding the Fourth Proportional to 712,231.80, 1,068,347.70 and 213,595.80

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Solution

The fourth proportional to 712,231.80, 1,068,347.70 and 213,595.80 is: 320,393.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,231.80 : 1,068,347.70 = 213,595.80 : x
  2. Step 2: Convert to fraction form
    712,231.80/1,068,347.70 = 213,595.80/x
  3. Step 3: Cross multiply
    712,231.80x = 1,068,347.70 × 213,595.80
  4. Step 4: Simplify right side
    712,231.80x = 228,194,581,659.66
  5. Step 5: Solve for x
    x = 228,194,581,659.66/712,231.80
  6. Step 6: Final answer
    x = 320,393.70

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Double scale
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Similar ratio
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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.