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Finding the Fourth Proportional to 631,764.80, 871,835.46 and 345,284.89

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Solution

The fourth proportional to 631,764.80, 871,835.46 and 345,284.89 is: 476,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,764.80 : 871,835.46 = 345,284.89 : x
  2. Step 2: Convert to fraction form
    631,764.80/871,835.46 = 345,284.89/x
  3. Step 3: Cross multiply
    631,764.80x = 871,835.46 × 345,284.89
  4. Step 4: Simplify right side
    631,764.80x = 301,031,610,904.20
  5. Step 5: Solve for x
    x = 301,031,610,904.20/631,764.80
  6. Step 6: Final answer
    x = 476,493.17

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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.