Home / 631,123.20-946,684.80-394,927.20

Finding the Fourth Proportional to 631,123.20, 946,684.80 and 394,927.20

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Solution

The fourth proportional to 631,123.20, 946,684.80 and 394,927.20 is: 592,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,123.20 : 946,684.80 = 394,927.20 : x
  2. Step 2: Convert to fraction form
    631,123.20/946,684.80 = 394,927.20/x
  3. Step 3: Cross multiply
    631,123.20x = 946,684.80 × 394,927.20
  4. Step 4: Simplify right side
    631,123.20x = 373,871,577,346.56
  5. Step 5: Solve for x
    x = 373,871,577,346.56/631,123.20
  6. Step 6: Final answer
    x = 592,390.80

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Half scale
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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.