Home / 1,313,381.56-1,970,072.88-316,109.56

Finding the Fourth Proportional to 1,313,381.56, 1,970,072.88 and 316,109.56

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Solution

The fourth proportional to 1,313,381.56, 1,970,072.88 and 316,109.56 is: 474,164.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,381.56 : 1,970,072.88 = 316,109.56 : x
  2. Step 2: Convert to fraction form
    1,313,381.56/1,970,072.88 = 316,109.56/x
  3. Step 3: Cross multiply
    1,313,381.56x = 1,970,072.88 × 316,109.56
  4. Step 4: Simplify right side
    1,313,381.56x = 622,758,871,264.73
  5. Step 5: Solve for x
    x = 622,758,871,264.73/1,313,381.56
  6. Step 6: Final answer
    x = 474,164.47

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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.