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Finding the Fourth Proportional to 631,515.51, 871,459.70 and 344,982.87

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Solution

The fourth proportional to 631,515.51, 871,459.70 and 344,982.87 is: 476,059.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,515.51 : 871,459.70 = 344,982.87 : x
  2. Step 2: Convert to fraction form
    631,515.51/871,459.70 = 344,982.87/x
  3. Step 3: Cross multiply
    631,515.51x = 871,459.70 × 344,982.87
  4. Step 4: Simplify right side
    631,515.51x = 300,638,666,670.43
  5. Step 5: Solve for x
    x = 300,638,666,670.43/631,515.51
  6. Step 6: Final answer
    x = 476,059.04

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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.