Home / 631,811.36-871,923.12-345,350.72

Finding the Fourth Proportional to 631,811.36, 871,923.12 and 345,350.72

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Solution

The fourth proportional to 631,811.36, 871,923.12 and 345,350.72 is: 476,596.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,811.36 : 871,923.12 = 345,350.72 : x
  2. Step 2: Convert to fraction form
    631,811.36/871,923.12 = 345,350.72/x
  3. Step 3: Cross multiply
    631,811.36x = 871,923.12 × 345,350.72
  4. Step 4: Simplify right side
    631,811.36x = 301,119,277,276.65
  5. Step 5: Solve for x
    x = 301,119,277,276.65/631,811.36
  6. Step 6: Final answer
    x = 476,596.81

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.