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Finding the Fourth Proportional to 631,567, 871,568.57 and 345,087.07

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Solution

The fourth proportional to 631,567, 871,568.57 and 345,087.07 is: 476,223.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,567 : 871,568.57 = 345,087.07 : x
  2. Step 2: Convert to fraction form
    631,567/871,568.57 = 345,087.07/x
  3. Step 3: Cross multiply
    631,567x = 871,568.57 × 345,087.07
  4. Step 4: Simplify right side
    631,567x = 300,767,044,125.39
  5. Step 5: Solve for x
    x = 300,767,044,125.39/631,567
  6. Step 6: Final answer
    x = 476,223.50

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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.