Home / 743,561.80-1,115,342.70-211,030.60

Finding the Fourth Proportional to 743,561.80, 1,115,342.70 and 211,030.60

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Solution

The fourth proportional to 743,561.80, 1,115,342.70 and 211,030.60 is: 316,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,561.80 : 1,115,342.70 = 211,030.60 : x
  2. Step 2: Convert to fraction form
    743,561.80/1,115,342.70 = 211,030.60/x
  3. Step 3: Cross multiply
    743,561.80x = 1,115,342.70 × 211,030.60
  4. Step 4: Simplify right side
    743,561.80x = 235,371,439,186.62
  5. Step 5: Solve for x
    x = 235,371,439,186.62/743,561.80
  6. Step 6: Final answer
    x = 316,545.90

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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.