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Finding the Fourth Proportional to 631,476.96, 871,437.84 and 359,530.80

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Solution

The fourth proportional to 631,476.96, 871,437.84 and 359,530.80 is: 496,152.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,476.96 : 871,437.84 = 359,530.80 : x
  2. Step 2: Convert to fraction form
    631,476.96/871,437.84 = 359,530.80/x
  3. Step 3: Cross multiply
    631,476.96x = 871,437.84 × 359,530.80
  4. Step 4: Simplify right side
    631,476.96x = 313,308,743,765.47
  5. Step 5: Solve for x
    x = 313,308,743,765.47/631,476.96
  6. Step 6: Final answer
    x = 496,152.30

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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.