Home / 742,790.80-1,114,186.20-210,314.62

Finding the Fourth Proportional to 742,790.80, 1,114,186.20 and 210,314.62

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Solution

The fourth proportional to 742,790.80, 1,114,186.20 and 210,314.62 is: 315,471.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,790.80 : 1,114,186.20 = 210,314.62 : x
  2. Step 2: Convert to fraction form
    742,790.80/1,114,186.20 = 210,314.62/x
  3. Step 3: Cross multiply
    742,790.80x = 1,114,186.20 × 210,314.62
  4. Step 4: Simplify right side
    742,790.80x = 234,329,647,262.24
  5. Step 5: Solve for x
    x = 234,329,647,262.24/742,790.80
  6. Step 6: Final answer
    x = 315,471.93

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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.