Home / 742,789.80-1,114,184.70-210,313.62

Finding the Fourth Proportional to 742,789.80, 1,114,184.70 and 210,313.62

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Solution

The fourth proportional to 742,789.80, 1,114,184.70 and 210,313.62 is: 315,470.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,789.80 : 1,114,184.70 = 210,313.62 : x
  2. Step 2: Convert to fraction form
    742,789.80/1,114,184.70 = 210,313.62/x
  3. Step 3: Cross multiply
    742,789.80x = 1,114,184.70 × 210,313.62
  4. Step 4: Simplify right side
    742,789.80x = 234,328,217,605.61
  5. Step 5: Solve for x
    x = 234,328,217,605.61/742,789.80
  6. Step 6: Final answer
    x = 315,470.43

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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.